Convert the Radian Measure to Degrees $$- \frac { \pi } { 2 }$$

Multiple Choice

Convert the radian measure to degrees. Round to the nearest hundredth if necessary.
- $$- \frac { \pi } { 2 }$$

A) $- 90 ^ { \circ }$
B) $- 1.57 ^ { \circ }$
C) $- 90 \pi ^ { \circ }$
D) $- \frac { \pi } { 2 } \circ$