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Thread: Conversion: Polar form to rectangular form.

  1. #1
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    Conversion: Polar form to rectangular form.

    r=2cos(theta)

    r=2(x/r)


    r^2=2x


    x^2+y^2=2x


    x= rcos(theta)


    the answer in the book is (x-1)^2+y^2=1
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  2. #2
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    Re: Conversion: Polar form to rectangular form.

    Quote Originally Posted by math951 View Post
    r=2cos(theta)

    r=2(x/r)


    r^2=2x


    x^2+y^2=2x


    x= rcos(theta)


    the answer in the book is (x-1)^2+y^2=1
    $r = 2 \cos(\theta)$

    $r^2 = 2r \cos(\theta)$

    $x^2 + y^2 = 2x$

    $x^2-2x +y^2 = 0$

    $(x-1)^2 -1 + y^2 = 0$

    $(x-1)^2 + y^2 = 1$
    Thanks from math951
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