(1 -cos² thita ) cosec²thita
= 1
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Explanation:
(1-cos^2 theta) cosec^2 theta =1
sin^2 theta + cos^2 theta = 1
sin^2 theta = 1- cos^2 theta
sin^2theta . cosec^2 theta
1/ cosec^2 theta . cosec^2 theta
= 1
= RHS
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