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shaalaa.com
Prove that Tan^3 θ/( 1 + Tan^2 θ) + Cot^3 θ/(1 + Cot^2 θ) = Sec θ. Cosec θ - 2 Sin θ Cos θ. - Mathematics | Shaalaa.com
Prove that Tan^3 θ/( 1 Tan^2 θ) Cot^3 θ/(1 Cot^2 θ) = Sec θ. Cosec θ - 2 Sin θ Cos θ.
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