Prove that (cotθ-coecθ)^2 = 1-cosθ/1+cosθ .

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#Provethatcotθminuscoecθ2iseqaulto1minuscosθby1pluscosθ
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Prove that (cotθ-coecθ)^2 = 1-cosθ/1+cosθ .
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Thank You !
By - Vineet Pandey
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