Quadrant IV. 3. Coterminal Angles Coterminal angles share the same terminal side. Find them by adding or subtracting ( 2\pi ) (or 360°).
( \frac5\pi6 \times \frac180\pi = \frac5 \times 1806 = 5 \times 30 = 150^\circ ) Quadrant IV
( 135 \times \frac\pi180 = \frac135\pi180 = \frac3\pi4 ) radians. Quadrant IV
( \frac3\pi4 )