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r=1-rcos(theta)convert into rectangular equation?
r with cos creating trouble for me how to solve this?
8 years ago

Answers

Steve
r = 1 - r cosθ
r(1+cosθ) = 1
r = 1/(1+cosθ)

You should recognize this as a parabola. Now for the conversion.

r = 1 - r cosθ
r^2 = (1 - r cosθ)^2
x^2+y^2 = 1 - 2x + x^2
y^2 = 1-2x
8 years ago

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