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Math Help - 2 Quick questions about Reference Angles

  1. #1
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    2 Quick questions about Reference Angles

    What is the reference angle of 540 Degrees in Radians?

    What is the reference angle of -180 Degrees in Radians?

    Thanks,
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  2. #2
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    Quote Originally Posted by qbkr21 View Post
    What is the reference angle of 540 Degrees in Radians?

    What is the reference angle of -180 Degrees in Radians?

    Thanks,
    I don't know what you mean by reference angle, but you convert
    A degrees from degrees to radians by:

    Arad = A*pi/180.

    So 540 degrees = 3*pi radian, and -180 degrees = -pi radian.

    Which are in fact the same angle (pi radian)

    RonL
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