Find the reference angle and sketch both angles in standard position

http://www.freemathvideos.com In this video series I show you how to find the reference angle of a given angel. The reference angle is the acute angle between the terminal and the horizontal axis. For each quadrant there are different formulas we will explore to find the reference angle.
θ = -145 degrees

Видео Find the reference angle and sketch both angles in standard position канала Brian McLogan