Find Products of Complex Numbers in Polar Form
- $\left.z 1=7 \cos \frac{\pi}{3}+i \sin \frac{\pi}{3}\right)$

Multiple Choice

Find Products of Complex Numbers in Polar Form
- $\left.z 1=7 \cos \frac{\pi}{3}+i \sin \frac{\pi}{3}\right)$

$\mathrm{z} 2=4\left(\cos \frac{\pi}{2}+i \sin \frac{\pi}{2}\right)$

A) $\left. 28 \cos \frac { 5 \pi } { 6 } + i \sin \frac { 5 \pi } { 6 } \right)$
B) $11 \left( \cos \frac { \pi } { 6 } + i \sin \frac { \pi } { 6 } \right)$
C) $11 \left( \cos \frac { 5 \pi } { 6 } + i \sin \frac { 5 \pi } { 6 } \right)$
D) $28 \left\{ \cos \frac { \pi } { 6 } + i \sin \frac { \pi } { 6 } \right)$