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Convert a Complex Number from Polar to Rectangular Form
- 9(cos3π4+isin3π4)9 \left( \cos \frac { 3 \pi } { 4 } + i \sin \frac { 3 \pi } { 4 } \right)

Question 71

Multiple Choice

Convert a Complex Number from Polar to Rectangular Form
- 9(cos3π4+isin3π4) 9 \left( \cos \frac { 3 \pi } { 4 } + i \sin \frac { 3 \pi } { 4 } \right)


A) 922+922i\frac { - 9 \sqrt { 2 } } { 2 } + \frac { 9 \sqrt { 2 } } { 2 } i
B) 922+922i\frac { 9 \sqrt { 2 } } { 2 } + \frac { - 9 \sqrt { 2 } } { 2 } \mathrm { i }
C) 922+922i\frac { 9 \sqrt { 2 } } { 2 } + \frac { 9 \sqrt { 2 } } { 2 } \mathrm { i }
D) 922+922i\frac { - 9 \sqrt { 2 } } { 2 } + \frac { - 9 \sqrt { 2 } } { 2 } \mathrm { i }

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