Prove that : (sin4θ−cos4θ 1)cosec2θ = 2

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Prove that : (sin^4 θ - cos^4 θ +1) cosec^2 θ = 2...|| Class 10 ||

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Prove that : `(sin^(4)theta- cos^(4) theta+ 1) 'cosec'^(2)theta=2`