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1-2sinxcosx = (sinx-cosx) ^2
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1-2sinxcosx = (sinx-cosx) ^2

User Anupam Yadav
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1 Answer

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(Sin x - cos x)^2
= sin^2 + cos x^2 - 2 sin x cos x
= 1 - 2 sin x cos x
User Evan Cordeiro
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