# What is the polar graph of r=1-cosx?

##### 1 Answer

Feb 3, 2017

See the graph and the explanation.

#### Explanation:

graph{x^2+y^2=sqrt(x^2+y^2)-x2 [-5, 5, -2.5, 2.5]}

Using usual polar

represents the curve that is befittingly named cardioid.

It has a dimple, at the pole r = 0.

For the Cartesian frame, the equation is

giving

Socratic utility.

.