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23 July, 19:26

The cosine of 63 degrees is 0.45. What is the sine of 27 degrees?

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  1. 23 July, 19:37
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    Answer: 0.45

    Explanation:

    The rule is that

    cos (x) = sin (y)

    only if x+y = 90, where x and y are angles in degrees. In this case, x = 63 and y = 27, so x+y = 63+27 = 90, which fulfills the requirements needed to use the equation above.

    Therefore,

    cos (63) = 0.45 leads to sin (27) = 0.45
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