SOLUTION: Prove 2 sin^2 x + cos 2x=1

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Question 1146917: Prove 2 sin^2 x + cos 2x=1
Answer by greenestamps(13203) About Me  (Show Source):
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Use the appropriate expression for cos(2x):

cos(2x) = 1-2sin^2(x)

2sin^2(x)+cos(2x) = 2sin^2(x)+1-2sin^2(x) = 1