SOLUTION: Given that sin^2 beta = sin alpha cos alpha, show that cos 2 Beta = 2 cos^2[π/4 + alpha]

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Question 1118725: Given that sin^2 beta = sin alpha cos alpha, show that cos 2 Beta = 2 cos^2[π/4 + alpha]
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!












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So






John

My calculator said it, I believe it, that settles it