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2 August, 05:12

What is csc (pie/2) =

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  1. 2 August, 08:36
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    Step-by-step explanation:

    Cos (pie/2)

    Pie is π

    This shows that the π is in radian

    2πrad = 1 complete revolution

    2πrad = 360°

    Divide both side by 2

    πrad=180°

    So let substitute πrad=180° into the cosine

    Cos (π/2) = Cos (180/2)

    Cos90

    Cos 90 is zero

    Cos (pie/2) = 0
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