Question: sin2 x +2 sin 4x + sin 6x cot 4x (sin 5x + sin 3x) = cot x (sin 5x - sin 3x) =4

sin2 x +2 sin 4x + sin 6x cot 4x (sin 5x + sin 3x) = cot x (sin 5x - sin 3x) =4 cos x sin 4x %3D %3D
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