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13 April, 18:19

Verify identity cot^2x + csc^2x = 2csc^2x - 1

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  1. 13 April, 18:31
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    Lhs = (c/s) ^2 + 1/s^2 = (c^2 + 1) / s^2 = (2 - s^2) / s^2

    rhs = (2/s^2) - 1 = (2 - s^2) / s^2 = lhs
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