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(cos theta - tan theta)^2/cos^2theta |
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Answer» H.S=cotθ−tanθ = sinθ cosθ
− cosθ sinθ
= sinθcosθ cos θ−sin 2 θ
= sinθcosθ cos 2 θ−(1−cos 2 θ)
= sinθcosθ cos 2 θ−1+cos 2 θ
= sincosθ 2cos 2 θ−1
=R.H.S Hence, cotθ−tanθ= sincosθ 2cos 2 θ−1
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