trig

Find all points of intersection of the polar curves r= 2 + 4cos theta and r= 6cos theta.

Please explain in detail.

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asked by Amber
  1. well, where does

    2 + 4cosθ = 6cosθ ?
    2 = 2cosθ
    cosθ = 1
    θ = 0,2pi,...

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    posted by Steve

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