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13 September, 09:14

Sinx=cos19∘

What is the value of x?

Enter your answer in the box.

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Answers (1)
  1. 13 September, 09:52
    0
    Remember that cos is just a translation of sin and vice versa.

    So:

    Sin (x) = Cos (90 - x)

    Cos (x) = Sin (90 - x)

    Therefore, to answer your question:

    Cos (19) = Sin (90 - 19)

    = Sin (71)
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