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17 December, 07:26

Sin (b) equals 1. Calculate cosinus.

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  1. 17 December, 10:03
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    Sinb = 1.

    sin²b + cos²b = 1

    1² + cos²b = 1

    cos²b = 1 - 1

    cos²b = 0

    cosb = √0

    cosb = 0

    cosine b = 0
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