Math, asked by snehaknair7993, 11 months ago

Prove that n∑k=11sin2kx=cotx−cot2nx for every x≠kπ2k,x∈R,n∈N+?

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Answered by AISHRAJPUT

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Prove that n∑k=11sin2kx=cotx−cot2nx for every x≠kπ2k,x∈R,n∈N+?

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