Question

Prove that : (cot³⁡θ sin³⁡θ)/((cos⁡θ+sin⁡θ)²)+(tan³⁡θ cos³⁡θ)/((cos⁡θ+sin⁡θ)²)=(cosec⁡θ.sec⁡θ-1)/(cosec⁡θ+sec⁡θ )

Answer 1

Answer:

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