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Solve the Problem Find zw\frac { z } { w }

Question 72

Multiple Choice

Solve the problem. Leave your answer in polar form.
- z=3(cos7π4+isin7π4) w=6(cos9π4+isin9π4) \begin{array} { l } z = \sqrt { 3 } \left( \cos \frac { 7 \pi } { 4 } + i \sin \frac { 7 \pi } { 4 } \right) \\w = \sqrt { 6 } \left( \cos \frac { 9 \pi } { 4 } + i \sin \frac { 9 \pi } { 4 } \right) \end{array}
Find zw\frac { z } { w } .


A) 32(cosπ2+isinπ2) 3 \sqrt { 2 } \left( \cos \frac { \pi } { 2 } + i \sin \frac { \pi } { 2 } \right)
B) 22(cosπ2+isinπ2) \frac { \sqrt { 2 } } { 2 } \left( \cos \frac { \pi } { 2 } + i \sin \frac { \pi } { 2 } \right)
C) 22(cos3π2+isin3π2) \frac { \sqrt { 2 } } { 2 } \left( \cos \frac { 3 \pi } { 2 } + i \sin \frac { 3 \pi } { 2 } \right)
D) 32(cos3π2+isin3π2) 3 \sqrt { 2 } \left( \cos \frac { 3 \pi } { 2 } + i \sin \frac { 3 \pi } { 2 } \right)

Correct Answer:

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