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Math Help - trig values of special angles

  1. #1
    Newbie
    Joined
    Nov 2008
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    6

    trig values of special angles

    help with homework.

    my directions are:
    -find the exact value without the use of a calculator.
    1) sin(pi)
    2) tan(3pi/2)
    3) csc(585 degrees)

    what are the steps to get the answeres without a calculator?
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  2. #2
    Senior Member
    Joined
    Dec 2008
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    Remember that in radians, 360 degrees = 2\pi. One unit's distance around a circle is one radian.

    The function \sin\,\theta returns the y-coordinate of the point of the unit circle with radians \theta.

    The function \tan\,\theta returns the slope of the line through that point, and \csc\,\theta\,=\,\frac{1}{\sin\,\theta}.
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