# Thread: converting from rectangular to polar

1. ## converting from rectangular to polar

Im given the rectangular coordinates (1,-1) now i need to find the polar coordinates.

I don't know how.

Thank you

2. ## Re: converting from rectangular to polar

Originally Posted by dazedandmathfused
Im given the rectangular coordinates (1,-1) now i need to find the polar coordinates.
If $(x,y)$ are rectangular coordinates, the corresponding polar coordinates are $(\rho,\theta)$ where $\rho=\sqrt{x^2+y^2}$ and $\tan \theta=y/x$ . Conclude.