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2 October, 03:29

True or false. The equation csc^2x-1=cot^2x is an identity.

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  1. 2 October, 03:42
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    Csc² x - 1 = cot² x

    1 / sin² x - 1 = cot² x

    (1 - sin² x) / sin² x = cot² x

    cos² x / sin² x = cot² x

    cot² x = cot² x

    Answer: True.
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