SOLUTION: verify that (sin x + cos x)^2 + (sin x - cos x)^2 = 1

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Question 782173: verify that (sin x + cos x)^2 + (sin x - cos x)^2 = 1
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
verify that (sin x + cos x)^2 + (sin x - cos x)^2 = 1
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sin^2 + 2sincos + cos^2 + sin^2 - 2sincos + cos^2 =? 1
2sin^2 + 2cos^2 =? 1
It doesn't.