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Thread: converting polar equation to rectangular form...tough problem

  1. August 17th 2009, 09:43 PM #1
    luckystar
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    converting polar equation to rectangular form...tough problem

    how would i convert r = 2/ (1+sinθ) into a rectangular form? i know that the answer is x^2+4y-4=0 because i checked the answer sheet. but how do i get to the answer??
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  2. August 17th 2009, 10:43 PM #2
    mr fantastic
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    Quote Originally Posted by luckystar View Post
    how would i convert r = 2/ (1+sinθ) into a rectangular form? i know that the answer is x^2+4y-4=0 because i checked the answer sheet. but how do i get to the answer??
    r(1 + \sin \theta )= 2 \Rightarrow r + r \sin \theta = 2 \Rightarrow r + y = 2 \Rightarrow r = 2 - y.

    Your job is to finish this solution.
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