#36 4.07 questions Precalculus

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May 14th, 2015

cos= adjacent over hypotenuse   . Thus we have a reference triangle with one leg rt5 and the hypotenuse 5. 5+b^2=25; b=rt20 . Thus we have determined our whole triangle. Opposite over hypotenuse is sine. That is, rt20/5. simplifying, sin is 2rt5/5 . 

May 14th, 2015

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May 14th, 2015
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