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Math Help - Trig with radians

  1. #1
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    Trig with radians

    Hello,
    Need help, not sure how to go about this.

    Determine the value of COS 5.3931 Radians. Round the answer to 4 decimal places.
    COS 5.3931 = ??

    Not sure what to do, need help setting this up, thanks.
    Jo
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  2. #2
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    Quote Originally Posted by bradycat View Post
    Hello,
    Need help, not sure how to go about this.

    Determine the value of COS 5.3931 Radians. Round the answer to 4 decimal places.
    COS 5.3931 = ??

    Not sure what to do, need help setting this up, thanks.
    Jo
    1. set your calculator to radian mode

    2. enter cos(5.3931)

    3. you should get 0.6293...
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