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Math Help - polar and rectangular coordinates

  1. #1
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    polar and rectangular coordinates

    hello everyone i hope your all doing well , i was hoping i could get a little help on solving this, heres the question
    Polar coordinates of a point are given. Find the rectangular coordinates of the point.
    heres the point given (fyi i cant figure out how to do this with the math thing) 5,2pi over 3 how would i go about solving this? any help would be awesome.
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  2. #2
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    Hello, Luke!

    Polar coordinates: . P\left(5,\:\frac{2\pi}{3}\right)
    Find the rectangular coordinates of P.

    Before you were assigned this problem,
    . . you should have been given the covernsions: . \begin{array}{ccc}x &=&r\cos\theta \\ y &=&r\sin\theta\end{array}
    Just plug in: . r\,=\,5,\;\theta\,=\,\frac{2\pi}{3}

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  3. #3
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    \frac{2\pi}{3} = 120degrees
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