4.2 Övningar
Sommarmatte 1
(Skillnad mellan versioner)
Versionen från 29 april 2007 kl. 15.27 (redigera) Annagf (Diskussion | bidrag) (→Övning 4.2:1) ← Gå till föregående ändring |
Versionen från 29 april 2007 kl. 15.34 (redigera) (ogör) Annagf (Diskussion | bidrag) (→Övning 4.2:2) Gå till nästa ändring → |
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Rad 94: | Rad 94: | ||
==Övning 4.2:2== | ==Övning 4.2:2== | ||
<div class="ovning"> | <div class="ovning"> | ||
- | Bestäm en trigonometrisk ekvation som vinkeln $v$ uppfyller. | + | Bestäm |
<table width="100%" cellspacing="10px"> | <table width="100%" cellspacing="10px"> | ||
<tr align="left"> | <tr align="left"> | ||
- | <td class="ntext">a) </td> | + | <td class="ntext">$\textrm{a) }$</td> |
- | <td class="ntext"> BILD</td> | + | <td class="ntext"> $\sin{\left(-\displaystyle \frac{\pi}{2}\right)}$</td> |
- | <td class="ntext">b) </td> | + | <td class="ntext">$\textrm{b) }$</td> |
- | <td class="ntext">BILD</td> | + | <td class="ntext">$\cos{2\pi}$</td> |
- | <td class="ntext">c) </td> | + | <td class="ntext">$\textrm{c) }$</td> |
- | <td class="ntext">BILD</td> | + | <td class="ntext">$\sin{9\pi}$</td> |
- | <td class="ntext">d) </td> | + | <td class="ntext">$\textrm{d) }$</td> |
- | <td class="ntext"> BILD</td> | + | <td class="ntext"> $\cos{\displaystyle \frac{7\pi}{2}}$</td> |
- | <td class="ntext">e) </td> | + | </tr> |
- | <td class="ntext">BILD</td> | + | <tr><td height="5px"/></tr> |
- | <td class="ntext">f) </td> | + | <tr align="left"> |
- | <td class="ntext">BILD</td> | + | <td class="ntext">$\textrm{e) }$</td> |
+ | <td class="ntext">$\sin{\displaystyle \frac{3\pi}{4}}$</td> | ||
+ | <td class="ntext">$\textrm{f) }$</td> | ||
+ | <td class="ntext">$\cos{\left(-\displaystyle \frac{\pi}{6}\right)}$</td> | ||
+ | <td class="ntext">$\textrm{g) }$</td> | ||
+ | <td class="ntext">$\cos{\displaystyle \frac{11\pi}{6}}$</td> | ||
+ | <td class="ntext">$\textrm{h) }$</td> | ||
+ | <td class="ntext">$\cos{\displaystyle \frac{11\pi}{3}}$</td> | ||
+ | </tr> | ||
+ | <tr><td height="5px"/></tr> | ||
+ | <tr align="left"> | ||
+ | <td class="ntext">$\textrm{i) }$</td> | ||
+ | <td class="ntext">$\tan{\displaystyle \frac{3\pi}{4}}$</td> | ||
+ | <td class="ntext">$\textrm{j) }$</td> | ||
+ | <td class="ntext">$\tan{\pi}$</td> | ||
+ | <td class="ntext">$\textrm{k) }$</td> | ||
+ | <td class="ntext">$\tan{\displaystyle \frac{7\pi}{6}}$</td> | ||
+ | <td class="ntext">$\textrm{l) }$</td> | ||
+ | <td class="ntext">$\tan{\left(-\displaystyle \frac{5\pi}{3}\right)}$</td> | ||
</tr> | </tr> | ||
<tr><td height="5px"/></tr> | <tr><td height="5px"/></tr> | ||
Rad 120: | Rad 138: | ||
<table width="100%" cellspacing="10px"> | <table width="100%" cellspacing="10px"> | ||
<tr align="left"> | <tr align="left"> | ||
- | <td class="ntext">a) </td> | + | <td class="ntext">$\textrm{a) }$</td> |
- | <td class="ntext"> $\tan v=\displaystyle\frac{2}{5}$</td> | + | <td class="ntext"> $-1$</td> |
- | <td class="ntext">b)</td> | + | <td class="ntext">$\textrm{b) }$</td> |
- | <td class="ntext">$\sin v=\displaystyle\frac{7}{11}$</td> | + | <td class="ntext">$1$</td> |
+ | <td class="ntext">$\textrm{c) }$</td> | ||
+ | <td class="ntext">$0$</td> | ||
+ | <td class="ntext">$\textrm{d) }$</td> | ||
+ | <td class="ntext"> $0$</td> | ||
</tr> | </tr> | ||
<tr><td height="5px"/></tr> | <tr><td height="5px"/></tr> | ||
<tr align="left"> | <tr align="left"> | ||
- | <td class="ntext">c)</td> | + | <td class="ntext">$\textrm{e) }$</td> |
- | <td class="ntext">$\cos v=\displaystyle\frac{5}{7}$</td> | + | <td class="ntext">$\displaystyle \frac{1}{\sqrt{2}}$</td> |
- | <td class="ntext">d)</td> | + | <td class="ntext">$\textrm{f) }$</td> |
- | <td class="ntext">$\sin v=\displaystyle\frac{3}{5}$</td> | + | <td class="ntext">$\displaystyle \frac{\sqrt{3}}{2}$</td> |
+ | <td class="ntext">$\textrm{g) }$</td> | ||
+ | <td class="ntext">$\displaystyle \frac{\sqrt{3}}{2}$</td> | ||
+ | <td class="ntext">$\textrm{h) }$</td> | ||
+ | <td class="ntext">$\displaystyle \frac{1}{2}$</td> | ||
</tr> | </tr> | ||
<tr><td height="5px"/></tr> | <tr><td height="5px"/></tr> | ||
<tr align="left"> | <tr align="left"> | ||
- | <td class="ntext">e)</td> | + | <td class="ntext">$\textrm{i) }$</td> |
- | <td class="ntext">$v=30 ^\circ$</td> | + | <td class="ntext">$-1$</td> |
- | <td class="ntext">f)</td> | + | <td class="ntext">$\textrm{j) }$</td> |
- | <td class="ntext">$\sin \displaystyle\frac{v}{2}=\displaystyle\frac{1}{3}$</td> | + | <td class="ntext">$0$</td> |
+ | <td class="ntext">$\textrm{k) }$</td> | ||
+ | <td class="ntext">$\displaystyle \frac{1}{\sqrt{3}}$</td> | ||
+ | <td class="ntext">$\textrm{l) }$</td> | ||
+ | <td class="ntext">$\sqrt{3}$</td> | ||
</tr> | </tr> | ||
<tr><td height="5px"/></tr> | <tr><td height="5px"/></tr> | ||
Rad 147: | Rad 177: | ||
<div class=NavHead>Lösning a </div> | <div class=NavHead>Lösning a </div> | ||
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga a<br />[[Bild:4_2_2a.gif]] | + | Lösning till delfråga a<br />[[Bild:4_2_3a.gif]] |
</div> | </div> | ||
</div> | </div> | ||
Rad 154: | Rad 184: | ||
<div class=NavHead>Lösning b </DIV> | <div class=NavHead>Lösning b </DIV> | ||
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga b<br />[[Bild:4_2_2b.gif]] | + | Lösning till delfråga b<br />[[Bild:4_2_3b.gif]] |
</div> | </div> | ||
</div> | </div> | ||
Rad 161: | Rad 191: | ||
<div class=NavHead>Lösning c </div> | <div class=NavHead>Lösning c </div> | ||
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga c<br />[[Bild:4_2_2c.gif]] | + | Lösning till delfråga c<br />[[Bild:4_2_3c.gif]] |
</div> | </div> | ||
</div> | </div> | ||
Rad 168: | Rad 198: | ||
<div class=NavHead>Lösning d </div> | <div class=NavHead>Lösning d </div> | ||
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga d<br />[[Bild:4_2_2d.gif]] | + | Lösning till delfråga d<br />[[Bild:4_2_3d.gif]] |
</div> | </div> | ||
</div> | </div> | ||
Rad 175: | Rad 205: | ||
<div class=NavHead>Lösning e </DIV> | <div class=NavHead>Lösning e </DIV> | ||
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga e<br />[[Bild:4_2_2e.gif]] | + | Lösning till delfråga e<br />[[Bild:4_2_3e.gif]] |
</div> | </div> | ||
</div> | </div> | ||
Rad 182: | Rad 212: | ||
<div class=NavHead>Lösning f </div> | <div class=NavHead>Lösning f </div> | ||
<div class=NavContent> | <div class=NavContent> | ||
- | Lösning till delfråga f<br />[[Bild:4_2_2f.gif]] | + | Lösning till delfråga f<br />[[Bild:4_2_3f.gif]] |
</div> | </div> | ||
</div> | </div> |
Versionen från 29 april 2007 kl. 15.34
Övning 4.2:1
Bestäm längden av sidan som är markerad med $x$ uttryckt med hjälp av de trigonometriska funktionerna.
a) | BILD | b) | BILD | c) | BILD | d) | BILD | e) | BILD | f) | BILD |
Facit
Facit till alla delfrågorna
a) | $x=13\cdot\tan {27 ^\circ} \approx 6,62$ | b) | $x=25\cdot\cos {32 ^\circ} \approx 21,2$ | c) | $x=\displaystyle\frac{14}{\tan {40 ^\circ}} \approx 16,7$ |
d) | $x=\displaystyle\frac{16}{\cos {20 ^\circ}} \approx 17,0$ | e) | $x=\displaystyle\frac{11}{\sin {35 ^\circ}} \approx 19,2$ | f) | $x=\displaystyle\frac{19}{\tan {50 ^\circ}} \approx 15,9$ |
Övning 4.2:2
Bestäm
$\textrm{a) }$ | $\sin{\left(-\displaystyle \frac{\pi}{2}\right)}$ | $\textrm{b) }$ | $\cos{2\pi}$ | $\textrm{c) }$ | $\sin{9\pi}$ | $\textrm{d) }$ | $\cos{\displaystyle \frac{7\pi}{2}}$ |
$\textrm{e) }$ | $\sin{\displaystyle \frac{3\pi}{4}}$ | $\textrm{f) }$ | $\cos{\left(-\displaystyle \frac{\pi}{6}\right)}$ | $\textrm{g) }$ | $\cos{\displaystyle \frac{11\pi}{6}}$ | $\textrm{h) }$ | $\cos{\displaystyle \frac{11\pi}{3}}$ |
$\textrm{i) }$ | $\tan{\displaystyle \frac{3\pi}{4}}$ | $\textrm{j) }$ | $\tan{\pi}$ | $\textrm{k) }$ | $\tan{\displaystyle \frac{7\pi}{6}}$ | $\textrm{l) }$ | $\tan{\left(-\displaystyle \frac{5\pi}{3}\right)}$ |
Facit
Facit till alla delfrågorna
$\textrm{a) }$ | $-1$ | $\textrm{b) }$ | $1$ | $\textrm{c) }$ | $0$ | $\textrm{d) }$ | $0$ |
$\textrm{e) }$ | $\displaystyle \frac{1}{\sqrt{2}}$ | $\textrm{f) }$ | $\displaystyle \frac{\sqrt{3}}{2}$ | $\textrm{g) }$ | $\displaystyle \frac{\sqrt{3}}{2}$ | $\textrm{h) }$ | $\displaystyle \frac{1}{2}$ |
$\textrm{i) }$ | $-1$ | $\textrm{j) }$ | $0$ | $\textrm{k) }$ | $\displaystyle \frac{1}{\sqrt{3}}$ | $\textrm{l) }$ | $\sqrt{3}$ |
Lösning e
Lösning till delfråga e
Bild:4 2 3e.gif
Lösning f
Lösning till delfråga f
Bild:4 2 3f.gif