Find Products of Complex Numbers in Polar Form
- A) $72 \left( \cos \frac { \pi } { 3 } + i \sin \frac { \pi } { 3 } \right)$

Multiple Choice

Find Products of Complex Numbers in Polar Form
- $$\begin{array} { l } z 1 = 6 \left( \cos \frac { 3 \pi } { 2 } + i \sin \frac { 3 \pi } { 2 } \right) \\z 2 = 12 \left( \cos \frac { 5 \pi } { 6 } + i \sin \frac { 5 \pi } { 6 } \right) \end{array}$$

A) $72 \left( \cos \frac { \pi } { 3 } + i \sin \frac { \pi } { 3 } \right)$
B) $\left. 18 \cos \frac { \pi } { 3 } + i \sin \frac { \pi } { 3 } \right)$
C) $72 \left( \cos \frac { \pi } { 3 } - i \sin \frac { \pi } { 3 } \right)$
D) $\left. 18 \cos \frac { \pi } { 3 } - i \sin \frac { \pi } { 3 } \right)$