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Evaluate: ∫ (sin2x/ sin 5x . sin3x) dx

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Evaluate: ∫ (sin2x/ sin 5x . sin3x) dx

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= ∫ (cot 3x – cot 5x) dx 

= (1/3) log |sin 3x| – (1/5) log |sin 5x| + c

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