Find the Reference Angle $\theta$ , And $\theta$ Sketch And $\theta$ In Standard Position

Multiple Choice

Find the reference angle $\theta$ , and $\theta$ sketch and $\theta$ in standard position. $\theta = 160 ^ { \circ }$

A) $\theta ^ { \prime } = 10 ^ { \circ }$
B) $\theta = 30 ^ { \circ }$
C) $\theta ^ { \prime } = - 20 ^ { \circ }$
D) $\theta ^ { \prime } = 20 ^ { \circ }$
E) $\theta ^ { \prime } = 40 ^ { \circ }$