SOLUTION: How can I prove this? cos^2(x)-sin^2(x)=1+sin(x)*cos(x)

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Question 936229: How can I prove this?
cos^2(x)-sin^2(x)=1+sin(x)*cos(x)
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
you cannot - it's not an identity