SOLUTION: verify the identity: (cos^2x)-(sin^2x)=(1-2sin^2X)

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Question 402561: verify the identity:
(cos^2x)-(sin^2x)=(1-2sin^2X)
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Using the identity cos%5E2%28x%29+%2B+sin%5E2%28x%29+=+1, if we subtract 2sin%5E2%28x%29 from both sides, we obtain cos%5E2%28x%29+-+sin%5E2%28x%29+=+1+-+2sin%5E2%28x%29 and we're done.