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Solution 4.1:3c

From Förberedande kurs i matematik 1

Revision as of 09:36, 27 September 2008 by Ian (Talk | contribs)
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In this right-angled triangle, the side of length 17 is the hypotenuse (it is the side which is opposite the right angle). Pythagoras' theorem then gives


172=82+x2


or


x2=172−82


We get


x=172−82=289−64=225=925=3252=35=15

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