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4.3 Övningar - Versionshistorik
2026-04-05T12:05:19Z
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Tek: Länkar in Ja/Nej-frågor
2010-05-06T12:45:05Z
<p>Länkar in Ja/Nej-frågor</p>
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<td colspan='2' style="background-color: white; color:black;">← Äldre version</td>
<td colspan='2' style="background-color: white; color:black;">Versionen från 6 maj 2010 kl. 12.45</td>
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<tr><td colspan="2" class="diff-lineno">Rad 4:</td>
<td colspan="2" class="diff-lineno">Rad 4:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{Mall:Ej vald flik|[[4.3 Trigonometriska samband|Teori]]}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{Mall:Ej vald flik|[[4.3 Trigonometriska samband|Teori]]}}</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{Mall:Vald flik|[[4.3 Övningar|Övningar]]}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{{Mall:Vald flik|[[4.3 Övningar|Övningar]]}}</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>{{Mall:Ej vald flik|[[4.3 Ja eller Nej?|Ja/Nej?]]}}</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>| style="border-bottom:1px solid #000" width="100%"| &nbsp;</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>| style="border-bottom:1px solid #000" width="100%"| &nbsp;</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|}</div></td></tr>
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Tek
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Tek den 21 april 2008 kl. 13.16
2008-04-21T13:16:32Z
<p></p>
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<td colspan='2' style="background-color: white; color:black;">Versionen från 21 april 2008 kl. 13.16</td>
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<tr><td colspan="2" class="diff-lineno">Rad 126:</td>
<td colspan="2" class="diff-lineno">Rad 126:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{| width="100%" cellspacing="10px"</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{| width="100%" cellspacing="10px"</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>|width="100%" | Visa "<del style="color: red; font-weight: bold; text-decoration: none;">Feynmans likhet</del>"</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|width="100%" | Visa "<ins style="color: red; font-weight: bold; text-decoration: none;">Morries formel</ins>"</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|</div></td></tr>
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Tek
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Oskar den 3 april 2008 kl. 11.10
2008-04-03T11:10:34Z
<p></p>
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<td colspan='2' style="background-color: white; color:black;">← Äldre version</td>
<td colspan='2' style="background-color: white; color:black;">Versionen från 3 april 2008 kl. 11.10</td>
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<tr><td colspan="2" class="diff-lineno">Rad 97:</td>
<td colspan="2" class="diff-lineno">Rad 97:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{| width="100%" cellspacing="10px"</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{| width="100%" cellspacing="10px"</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|a)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|a)</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>|width="100%" | <math>\sin{x}=\displaystyle \frac{2}{3}\,</math>,<math>\ \sin{y}=\displaystyle \frac{1}{3}\ </math> och <math>\,x\,</math>,<math> \,y\,</math> är vinklar i första kvadranten.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|width="100%" | <math>\sin{x}=\displaystyle \frac{2}{3}\,</math>,<math>\ \sin{y}=\displaystyle \frac{1}{3}\ </math> och <math>\,x\,</math>, <math> \,y\,</math> är vinklar i första kvadranten.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|b)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|b)</div></td></tr>
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Oskar
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Oskar den 3 april 2008 kl. 11.09
2008-04-03T11:09:51Z
<p></p>
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<td colspan='2' style="background-color: white; color:black;">← Äldre version</td>
<td colspan='2' style="background-color: white; color:black;">Versionen från 3 april 2008 kl. 11.09</td>
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<tr><td colspan="2" class="diff-lineno">Rad 97:</td>
<td colspan="2" class="diff-lineno">Rad 97:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{| width="100%" cellspacing="10px"</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{| width="100%" cellspacing="10px"</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|a)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|a)</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>|width="100%" | <math>\sin{x}=\displaystyle \frac{2}{3}\,</math>,<math>\ \sin{y}=\displaystyle \frac{1}{3}\ </math> och <math>\,x\,, \,y\,</math> är vinklar i första kvadranten.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|width="100%" | <math>\sin{x}=\displaystyle \frac{2}{3}\,</math>,<math>\ \sin{y}=\displaystyle \frac{1}{3}\ </math> och <math>\,x\,<ins style="color: red; font-weight: bold; text-decoration: none;"></math></ins>,<ins style="color: red; font-weight: bold; text-decoration: none;"><math> </ins>\,y\,</math> är vinklar i första kvadranten.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|b)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|b)</div></td></tr>
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Oskar
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Oskar den 3 april 2008 kl. 11.08
2008-04-03T11:08:25Z
<p></p>
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<td colspan='2' style="background-color: white; color:black;">← Äldre version</td>
<td colspan='2' style="background-color: white; color:black;">Versionen från 3 april 2008 kl. 11.08</td>
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<tr><td colspan="2" class="diff-lineno">Rad 97:</td>
<td colspan="2" class="diff-lineno">Rad 97:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{| width="100%" cellspacing="10px"</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{| width="100%" cellspacing="10px"</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|a)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|a)</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>|width="100%" | <math>\sin{x}=\displaystyle \frac{2}{3}\,</math>,<math>\ \sin{y}=\displaystyle \frac{1}{3}\ </math> och <math>\,x\, \,y\,</math> är vinklar i första kvadranten.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|width="100%" | <math>\sin{x}=\displaystyle \frac{2}{3}\,</math>,<math>\ \sin{y}=\displaystyle \frac{1}{3}\ </math> och <math>\,x\<ins style="color: red; font-weight: bold; text-decoration: none;">,</ins>, \,y\,</math> är vinklar i första kvadranten.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|b)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|b)</div></td></tr>
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Oskar
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Oskar den 3 april 2008 kl. 11.07
2008-04-03T11:07:25Z
<p></p>
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<td colspan='2' style="background-color: white; color:black;">← Äldre version</td>
<td colspan='2' style="background-color: white; color:black;">Versionen från 3 april 2008 kl. 11.07</td>
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<tr><td colspan="2" class="diff-lineno">Rad 97:</td>
<td colspan="2" class="diff-lineno">Rad 97:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{| width="100%" cellspacing="10px"</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>{| width="100%" cellspacing="10px"</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|a)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|a)</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>|width="100%" | <math>\sin{x}=\displaystyle \frac{2}{3}\,</math>,<math>\ \sin{y}=\displaystyle \frac{1}{3}\ </math> och <math>\,x\,<del style="color: red; font-weight: bold; text-decoration: none;">$, $</del>\,y\,</math> är vinklar i första kvadranten<del style="color: red; font-weight: bold; text-decoration: none;">.</del>.</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|width="100%" | <math>\sin{x}=\displaystyle \frac{2}{3}\,</math>,<math>\ \sin{y}=\displaystyle \frac{1}{3}\ </math> och <math>\,x\, \,y\,</math> är vinklar i första kvadranten.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|b)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|b)</div></td></tr>
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Oskar
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Oskar den 3 april 2008 kl. 09.30
2008-04-03T09:30:06Z
<p></p>
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<td colspan='2' style="background-color: white; color:black;">← Äldre version</td>
<td colspan='2' style="background-color: white; color:black;">Versionen från 3 april 2008 kl. 09.30</td>
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<tr><td colspan="2" class="diff-lineno">Rad 129:</td>
<td colspan="2" class="diff-lineno">Rad 129:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>|width="100%" |<math>\cos 20^\circ \cdot \cos 40^\circ \cdot \cos 80^\circ = \displaystyle\frac{1}{8}\,\mbox{.}</math></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|width="100%" |<ins style="color: red; font-weight: bold; text-decoration: none;"><center> </ins><math>\cos 20^\circ \cdot \cos 40^\circ \cdot \cos 80^\circ = \displaystyle\frac{1}{8}\,\mbox{.}</math<ins style="color: red; font-weight: bold; text-decoration: none;">> </center</ins>></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|</div></td></tr>
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Oskar
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Oskar den 3 april 2008 kl. 09.28
2008-04-03T09:28:37Z
<p></p>
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<td colspan='2' style="background-color: white; color:black;">← Äldre version</td>
<td colspan='2' style="background-color: white; color:black;">Versionen från 3 april 2008 kl. 09.28</td>
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<tr><td colspan="2" class="diff-lineno">Rad 124:</td>
<td colspan="2" class="diff-lineno">Rad 124:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>===Övning 4.3:9===</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>===Övning 4.3:9===</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div><div class="ovning"></div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div><div class="ovning"></div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>Visa "Feynmans likhet"</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">{| width="100%" cellspacing="10px"</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">|</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">|width="100%" | </ins>Visa "Feynmans likhet"</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|</div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|width="100%" |<math>\cos 20^\circ \cdot \cos 40^\circ \cdot \cos 80^\circ = \displaystyle\frac{1}{8}\,\mbox{.}</math></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>|-</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del style="color: red; font-weight: bold; text-decoration: none;"><math>\cos 20^\circ \cdot \cos 40^\circ \cdot \cos 80^\circ = \displaystyle\frac{1}{8}\,\mbox{.}</math></del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">|</ins></div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>|<del style="color: red; font-weight: bold; text-decoration: none;">-</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>|<ins style="color: red; font-weight: bold; text-decoration: none;">width="100%" |</ins>(Ledtr&aring;d: Anv&auml;nd formeln f&ouml;r dubbla vinkeln på <math>\,\sin 160^\circ\,</math>.)</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div>(Ledtr&aring;d: Anv&auml;nd formeln f&ouml;r dubbla vinkeln på <math>\,\sin 160^\circ\,</math>.)</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">|}</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div></div>{{#NAVCONTENT:Lösning |Lösning 4.3:9}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div></div>{{#NAVCONTENT:Lösning |Lösning 4.3:9}}</div></td></tr>
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Oskar
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Oskar den 3 april 2008 kl. 09.25
2008-04-03T09:25:29Z
<p></p>
<table style="background-color: white; color:black;">
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<td colspan='2' style="background-color: white; color:black;">← Äldre version</td>
<td colspan='2' style="background-color: white; color:black;">Versionen från 3 april 2008 kl. 09.25</td>
</tr>
<tr><td colspan="2" class="diff-lineno">Rad 125:</td>
<td colspan="2" class="diff-lineno">Rad 125:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div><div class="ovning"></div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div><div class="ovning"></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Visa "Feynmans likhet"</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Visa "Feynmans likhet"</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del style="color: red; font-weight: bold; text-decoration: none;"><math></del><math>\cos 20^\circ \cdot \cos 40^\circ \cdot \cos 80^\circ = \displaystyle\frac{1}{8}\,\mbox{.}</math><del style="color: red; font-weight: bold; text-decoration: none;"></math></del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">|-</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">|-</ins></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><math>\cos 20^\circ \cdot \cos 40^\circ \cdot \cos 80^\circ = \displaystyle\frac{1}{8}\,\mbox{.}</math></div></td></tr>
<tr><td colspan="2"> </td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">|-</ins></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>(Ledtr&aring;d: Anv&auml;nd formeln f&ouml;r dubbla vinkeln på <math>\,\sin 160^\circ\,</math>.)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>(Ledtr&aring;d: Anv&auml;nd formeln f&ouml;r dubbla vinkeln på <math>\,\sin 160^\circ\,</math>.)</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div></div>{{#NAVCONTENT:Lösning |Lösning 4.3:9}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div></div>{{#NAVCONTENT:Lösning |Lösning 4.3:9}}</div></td></tr>
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Oskar
http://wiki.math.se/wikis/forberedandematte1/index.php?title=4.3_%C3%96vningar&diff=1310&oldid=prev
Oskar den 3 april 2008 kl. 09.23
2008-04-03T09:23:53Z
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<td colspan='2' style="background-color: white; color:black;">← Äldre version</td>
<td colspan='2' style="background-color: white; color:black;">Versionen från 3 april 2008 kl. 09.23</td>
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<tr><td colspan="2" class="diff-lineno">Rad 125:</td>
<td colspan="2" class="diff-lineno">Rad 125:</td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div><div class="ovning"></div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div><div class="ovning"></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Visa "Feynmans likhet"</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>Visa "Feynmans likhet"</div></td></tr>
<tr><td class='diff-marker'>-</td><td style="background: #ffa; color:black; font-size: smaller;"><div><math>\cos 20^\circ \cdot \cos 40^\circ \cdot \cos 80^\circ = \displaystyle\frac{1}{8}\,\mbox{.}</math></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;"><math></ins><math>\cos 20^\circ \cdot \cos 40^\circ \cdot \cos 80^\circ = \displaystyle\frac{1}{8}\,\mbox{.}<ins style="color: red; font-weight: bold; text-decoration: none;"></math></ins></math></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>(Ledtr&aring;d: Anv&auml;nd formeln f&ouml;r dubbla vinkeln på <math>\,\sin 160^\circ\,</math>.)</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div>(Ledtr&aring;d: Anv&auml;nd formeln f&ouml;r dubbla vinkeln på <math>\,\sin 160^\circ\,</math>.)</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div></div>{{#NAVCONTENT:Lösning |Lösning 4.3:9}}</div></td><td class='diff-marker'> </td><td style="background: #eee; color:black; font-size: smaller;"><div></div>{{#NAVCONTENT:Lösning |Lösning 4.3:9}}</div></td></tr>
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Oskar