prove : (1-cos theta) (1+cos theta) ( 1+ cot ^2 theta)=1
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Answer:
LHS=
(1-cos theta)(1+cos theta)(1+cot^2 theta)
=(1-cos^2 theta)(1+cot^2 theta)
=sin^2 theta*cosec^2theta
=1
=RHS (HENCE PROVED)
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