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Prove the following identities. (i) cot θ + tan θ = sec θ cosec θ (ii) tan^4 θ + tan^2 θ = sec^4 θ – sec^2 θ

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Prove the following identities.

(i) cot θ + tan θ = sec θ cosec θ

(ii) tan4 θ + tan2 θ = sec4 θ – sec2 θ

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(i) L.H.S. 

(ii) L.H.S. = tan2θ(tan2θ + 1)

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