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Homework Help: Converting a polar equation to an x,y equation

  1. Mar 27, 2012 #1
    1. The problem statement, all variables and given/known data
    r=(1/(2+cos(θ))


    2. Relevant equations
    r=sqrt(x^2+y^2)
    rcosθ=x
    rsinθ=y

    3. The attempt at a solution

    Not sure what first step to take. This problem looks so simple, but I can't seem to get far on paper. Not sure if I should multiply both sides by 2+cos and then multiply both sides by r, or if I should change the fraction as (2+cos)^-1.
     
  2. jcsd
  3. Mar 27, 2012 #2
    You knew the answer all along.
     
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