Asked by uche

Given that cos A = 5/13 and A and B are both acute angles, calculate the value of Sin2A and Cos2A

11 years ago

Answered by Steve

since cosA = 5/13, sinA = 12/13

Now just use those values in your double-angle formulas.

11 years ago

Answered by sutej.ym

sinA=120 and cosA=-144/169

11 years ago

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