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OpenStudy (anonymous):
The expression sinx (cosx cotx - sinx) simplifies to _____? cos(2x) 1 cot^2 x- sin^2 x
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OpenStudy (anonymous):
cotx=cosx/sinx, then cosx*cotx=cosx^2/sinx. muliply sinx in
OpenStudy (anonymous):
the result would be cosx^2-sinx^2 and you get cos 2x
OpenStudy (anonymous):
cos^2x-sin^2x
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