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1 July, 16:52

Sinplify f (x) = cos (-x) csc (-x)

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  1. 1 July, 19:06
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    F (x) = cos (-x) csc (-x)

    =cos (x) (-csc (x))

    =-cos (x) (1/sin (x))

    =-cos (x) / sin (x)

    =-cot (x)
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