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​ Prove that (cos7x + cos3x - cos5x - cosx)/(sin7x - sin3x - sin5x + sinx)  = cot2x ​

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Prove that \(\frac{cos7x + cos3x - cos5x - cosx}{sin7x - sin3x - sin5x + sinx} \) = cot2x

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LHS = \(\frac{cos7x + cos3x - cos5x - cosx}{sin7x - sin3x - sin5x + sinx} \)

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