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Math Help - find value of inverse trig ratios

  1. #1
    Junior Member
    Joined
    Aug 2008
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    35

    find value of inverse trig ratios

    arc tan undefined

    arc sin 1/2

    cos (to the power of -1) - square root of 3 over 2

    cos(arc tan 5/13)

    Can anyone guide me through these?
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  2. #2
    Junior Member
    Joined
    Oct 2008
    Posts
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    arc tan undefined - Where is tangent undefined? That will be your answer. Tangent is undefined at \frac{\pi}{2} and \frac{3\pi}{2}

    The other problems can be done by basically working backwards or plugging them into your calculator. If that does not help then I can do a couple more or someone else can.
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