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OpenStudy (anonymous):
Find side AC.
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OpenStudy (anonymous):
OpenStudy (kropot72):
The cosine of angle A is \[\cos A=\frac{adjacent side}{hypotenuse}=\frac{AC}{3}\] Can you multiply both sides of the equation to get an expression for AC?
OpenStudy (kropot72):
@ello_bello Do you follow?
Directrix (directrix):
cos (40) = AC/3 @ello_bello
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