Question

How do you convert `r=8` into rectangular equations?

Answer 1

`x^2+y^2 = 64`

Explanation:

With the pass equations

#{(x = r cos theta), (y = r sin theta):}#

substituting we have

#{(x = 8 cos theta), (y = 8 sin theta):}#

Squaring an adding we obtain the
circle's origin centered equation

`x^2+y^2 = 64`