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

question 71

Multiple Choice

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

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

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