prove identities cotx - cot2x = cosec 2x
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Originally Posted by manutd4life prove identities cotx - cot2x = cosec 2x cotx - cot2x = cosx/sinx - cos2x/sin2x = (cosx*sin2x -sinx*cos2x)/sinx*sin2x = sinx/sinx*sin2x = 1/sin2x = cosec2x
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