SOLUTION: How to verify this equation cos^2x*sin^2x=1-2sin^2x

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Question 225038: How to verify this equation
cos^2x*sin^2x=1-2sin^2x
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
How to verify this equation
cos^2x*sin^2x=1-2sin^2x
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cos%5E2%2830%29%2Asin%5E2%2830%29+=+1+-+2sin%5E2%2830%29
(3/4)*(1/4) =? 1 - 2(1/4)
3/16 =? 1/2
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That's not a good equation. One case not equal is sufficient.