How do I graph cardioid $r = 2 + 2cosθ$ ?

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Answer 1 · 2015-06-25T15:12:34

Use a Polar graph and plot for $theta$ equal to 0, $pi/3, pi/2, pi, (2pi)/3, (4pi)/3, (3pi)/2 and 2pi$ and draw a symmetrical curve.

How do I graph cardioid r = 2 + 2cosθr = 2 + 2cosθ?