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Math Help - another polar expression proplem

  1. #1
    Member billym's Avatar
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    another polar expression proplem

    caretesian coordinates: (-3,4)

    polar coordinates: (5 , pi + arctan ( - 4/3))

    Could somebody explain to me step by step how the angle, pi + arctan ( - 4/3), was determined from the cartesian coordinates?
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  2. #2
    Eater of Worlds
    galactus's Avatar
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    Try previewing your post before you submit it. You didn't surround your LaTex in
    Code:
    [tex][\math]
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  3. #3
    Member billym's Avatar
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    <br />
\left( { - 3,4} \right) \equiv \left( {5,\pi + \arctan \left( {\frac{{ - 4}}{3}} \right)} \right)<br />

    There. So... how do we find the angle?
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  4. #4
    Senior Member Peritus's Avatar
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