## By Pavel Panchekha

### 14 May 2011

Everyone's aware that one can draw a "cardioid" in the polar coordinate system with the equation $$r = 1 - \cos t$$. But we can do better for a heart shape, right?
A friend of a friend forwarded the following heart shape equation to me: $r = \frac{\sin t \sqrt{|\cos t|}}{\sin t + \frac75} - 2\sin t + 2$