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Math Help - Polar to Cartesian coordinates..

  1. #1
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    Polar to Cartesian coordinates..

    Convert the following equation given in polar coordinates to Cartesian (x,y) coordinates

    where

    y = ??

    Have no idea how to start this..with polar coordinates..can someone help?
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  2. #2
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    Quote Originally Posted by Jgirl689 View Post
    Convert the following equation given in polar coordinates to Cartesian (x,y) coordinates

    where

    y = ??

    Have no idea how to start this..with polar coordinates..can someone help?
    You're expected to know that

    x = r\cos{\theta}, y = r\sin{\theta} and r^2 = x^2 + y^2.


    How do you think you can rearrange this formula so that it is in terms of r, \sin{\theta} and \cos{\theta}?
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  3. #3
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    I solved it and for the answer I got y=x^2...is that right?
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