Question

cot4 X whole bracket sin 5 x + sin 3x​

Answer 1

Answer:

L.H.S = cot4x(sin5x+sin3x) ⇒cotx(sin(4x+x)−sin(4x−x)) ⇒cotx(sin5x−sin3x)=R.H.S Hence e-that-cot-4x-sin-5x-sin-3x-cot-x-sin-5x-sin-3x

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