Question

How do you convert `x^2 + y^2 = 2` into polar form?

Answer 1

`r=2` (polar form)

Explanation:

`x^2+y^2=2` is a circle centered on the origin with radius `2`

In polar form the radius (`r`) is equal to `2`
and
the angle (`theta`) is unconstrained
(i.e. it doesn't show up in the equation; similar to a Cartesian linear equation `x=5` where `y` is unconstrained).