# How do you graph #r=1+2costheta#?

##### 1 Answer

Dec 14, 2016

The graph of this limacon is obtained using the cartesian form

#### Explanation:

Use the conversion formula

gives

Hence

or

Then use the Socratic graphic facility.

The period for

2pi]#.

graph{x^2+y^2-sqrt(x^2+y^2)-2x=0 [-5, 5, -2.5, 2.5]}