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17 May, 19:40

4. CSC X COS X - 2 cos x = 0

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  1. 17 May, 20:08
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    infinitely many answers, any odd integer n times π/2

    ex. π/2, 3π/2, 5π/2

    Step-by-step explanation:

    we know that cos (π/2) or cos (3π/2) is 0

    if one factor is 0, the product is zero, so we will not care about csc (x).

    x is any odd integer n times π/2
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