1+ cos theta - sin square theta / sin theta + sin theta . cos theta
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=1+cos theta-sin square theta/sin theta+sin theta cos theta
=sin square theta+cos square theta+cos theta-sin square theta/sin theta+sin theta cos theta
=cos theta(cos theta+1)/sin theta(cos theta+1)
=cot theta answer
=sin square theta+cos square theta+cos theta-sin square theta/sin theta+sin theta cos theta
=cos theta(cos theta+1)/sin theta(cos theta+1)
=cot theta answer
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