Select all that are measures of angles that are coterminal with a –50° angle.

Coterminal angles 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.

I'm pretty sure it's b). i try drawing the functions out and b is the one that stands out or isnt a "line"