Question

What is `(-1,3)` in polar coordinates?

Answer 1

`sqrt10, 108.435 degrees`

Explanation:

Since you are on the second quadrant, compute the hypotenus first:

`h^2=(-1^2)+(3^2)=10`

In other words,

`h=sqrt10`

Compute angle by your triangle (108.435 degrees).

Your polar coordinates: `sqrt10, 108.435 degrees`