Write Complex Numbers in Polar Form
- $- 4 \mathrm { i }$

Multiple Choice

Write Complex Numbers in Polar Form
- $- 4 \mathrm { i }$

A) $4 \left( \cos 270 ^ { \circ } + i \sin 270 ^ { \circ } \right)$
B) $4 \left( \cos 90 ^ { \circ } + i \sin 90 ^ { \circ } \right)$
C) $4 \left( \cos 180 ^ { \circ } + i \sin 180 ^ { \circ } \right)$
D) $4 \left( \cos 0 ^ { \circ } + \mathrm { i } \sin 0 ^ { \circ } \right)$