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

(cosx-sinx)^2 = 1-2sinx cosx
asked 215k views
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(cosx-sinx)^2 = 1-2sinx cosx

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User Jainarine
by
8.1k points

1 Answer

3 votes
cos^2x - 2cosxcosx + sin^2x = 1 - 2sin x cosx

So cos^2x + sin^2x = 1
answered
User Tftd
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