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OpenStudy (anonymous):
what is the value of cotx-sin(pi/2-x)cos(pi/2-x) (i)cotx cos^2x (ii)cot^2x (iii)cos^2 x (iv)tan^2x
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OpenStudy (unklerhaukus):
cot(x) - sin(pi/2-x) cos(pi/2-x) can you convert sin(pi/2-x) into something simpler?
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