- #1

dylanhouse

- 42

- 0

## Homework Statement

How do I write 1-2i in polar form?

## Homework Equations

## The Attempt at a Solution

I know r=√5, and when using x=rcosθ, I get angle of 63.43 or 296.57. However, when I take the sin inverse of-2/√5 I get -63.43. I am really confused.