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posted by Blossom Saturday, March 24, 2012 at 3:03pm.

Prove: (cotx sinx)(secx-cosx)=sin^2(X)

(cosx/sinx X sinx)(1/cosx - cosx) = sin^2x (cosx)(1-cos^2x) /cosx = sin^2x 1-cos^2x = sin^2x sin^2x = sin^2x PROVED

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