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Prove that tan^3θ/(1+tan^2θ)+cot^3θ/(1+cot^2θ)=secθcosecθ-2sinθcosθ

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asked Feb 15, 2018 in Mathematics by Kundan kumar (49,132 points) ● 34 ● 383 ● 1023

Prove that tan3θ/(1+tan2θ)+cot3θ/(1+cot2θ)=secθcosecθ-2sinθcosθ

Prove that tan3 theta/(1+tan2 theta)+cot3 theta/(1+cot2 theta)=sec theta cosec theta-2sin thetacos theta

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answered Feb 15, 2018 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 21
 
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  Hence proved

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