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30 May, 13:32

Find the value of x such that sin (90-x) = cos 50

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Answers (2)
  1. 30 May, 13:51
    0
    Solution

    sin (90-x) = sin (90-50)

    90-x=40⇒x=90-40

    x=50.
  2. 30 May, 17:29
    0
    Sin (90-x) = cos x

    so x = 40
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