Question

Determine the rectangular equation of the curv x²+y²=20

Answer 1

`r = 2 √(5)`

Explanation:

Im going to assume you means polar because the equation is already in rectangular form.

This equation represents a circle with a radius of

`r = √(20) = 2 √(5)`

The polar equation for a circle is simply just radius itself.

So the polar equation is

`r = 2 √(5)`

Also, notice that

`{x}^(2) + {y}^(2) = r`