# How do you convert r = 1 + cos (theta) into rectangular form?

##### 1 Answer

Jul 5, 2017

#### Explanation:

Converting from polar to rectangular form:

Here our polar equation is:

Multiply both sides by

Substituting for

Which is our polar equation in rectangular form.

NB: This is the equation of the cardioid below.

graph{ x^2+y^2 =sqrt(x^2+y^2) + x [-1.835, 4.325, -1.478, 1.602]}