Angle M has a measure between 0 and 360 and is coterminal with a - 620° angle. What is the measure of angle M?

100°

110°

120°

130°

Two angles are said to be coterminal if when they are drawn in a standard position, their terminal sides are on the same location. A coterminal angle can be determined by adding or subtracting 360 degrees to the given angle. Thus, for the given - 620 degrees angle we add continuously 360 until we find an angle that is in the choices.

-620 + 360 = - 260-260 + 360 = 100

Therefore, Angle M is equal to 100 degrees.