<u>Coterminal angles</u> are angles that share the same initial side and have a common terminal side. The attached diagram labels the initial and terminal sides, along with example coterminal angles for 45°.
So now let's find the coterminal angles for the one you were given. To find a coterminal with a given angle, simply add or subtract 360° to the angle you were given.
-50° + 360° = 310° -50° - 360° = -410°
310° and -410° are two coterminal angles with a -50° angle.
