Write Complex Numbers in Polar Form
- $- 5 \sqrt { 3 } - 5 i$

Multiple Choice

Write Complex Numbers in Polar Form
- $- 5 \sqrt { 3 } - 5 i$

A) $\left. 10 \cos \frac { 7 \pi } { 6 } + i \sin \frac { 7 \pi } { 6 } \right)$
B) $5 \sqrt { 3 } \left( \cos \frac { 13 \pi } { 6 } + i \sin \frac { 13 \pi } { 6 } \right)$
C) $\left. 10 \cos \frac { 4 \pi } { 3 } + i \sin \frac { 4 \pi } { 3 } \right\}$
D) $5 \sqrt { 3 } \left( \cos \frac { 4 \pi } { 3 } + i \sin \frac { 4 \pi } { 3 } \right)$