Find Products of Complex Numbers in Polar Form
- A) $21 \left( \cos 42 ^ { \circ } + i \sin 42 ^ { \circ } \right)$

Multiple Choice

Find Products of Complex Numbers in Polar Form
- $$\begin{array} { l } \mathrm { z } 1 = 3 \left( \cos 34 ^ { \circ } + \mathrm { i } \sin 34 ^ { \circ } \right) \\\mathrm { z } 2 = 7 \left( \cos 8 ^ { \circ } + \mathrm { i } \sin 8 ^ { \circ } \right) \end{array}$$

A) $21 \left( \cos 42 ^ { \circ } + i \sin 42 ^ { \circ } \right)$
B) $21 \left( \cos 26 ^ { \circ } + i \sin 26 ^ { \circ } \right)$
C) $10 \left( \cos 42 ^ { \circ } + i \sin 42 ^ { \circ } \right)$
D) $10 \left( \cos 272 ^ { \circ } + i \sin 272 ^ { \circ } \right)$