Find A: If SinA = 2Cos^2A, find A.

AA.R

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If SinA = 2Cos2A, find A.

Can you tell me if it is possible to find A with just this equation and if so please show how you got it.
 
If SinA = 2Cos2A, find A.

Can you tell me if it is possible to find A with just this equation and if so please show how you got it.
Yes

Hint:

cos2(A) = 1 - sin2(A)
 
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