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Question

How to prove this identity.:

17. 1+tan2 θ sin2 θtan θ= tan θ

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Solution

Dear student,

Taking L.H.S1+tan2θsin2θtanθ=sec2θ×sin2θtanθ=sin2θcos2θtanθ=tan2θtanθ=tanθ=R.H.SHence proved.

Regards

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