Express the Complex Number in Polar Form $- 4$ A) $4 \left( \cos 180 ^ { \circ } + i \sin 180 ^ { \circ } \right)$

Express the complex number in polar form.
- $- 4$

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

Correct Answer:

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