prove that tan theta/(1+tan^2 theta)^2+cot theta/(1+cot^2 theta)^2 =sin theta×cos theta

prove that tan theta/(1+tan^2 theta)^2+cot theta/(1+cot^2 theta)^2 =si

1.	prove that tan theta/(1+tan^2 theta)^2+cot theta/(1+cot^2 theta)^2 =sin theta×cos theta
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