Find the Trigonometric Form Of $- 18 \sqrt { 3 } - 18$

question 67

Multiple Choice

Find the trigonometric form of $- 18 \sqrt { 3 } - 18$ .

• A) \(18 \left( \cos \frac { 7 \pi } { 6 } + i \sin \frac { 7 \pi } { 6 } \right)\)
• B) \(36 \left( \cos \frac { 7 \pi } { 6 } + i \sin \frac { 7 \pi } { 6 } \right)\)
• C) \(324 \left( \cos \frac { 5 \pi } { 6 } + i \sin \frac { 5 \pi } { 6 } \right)\)
• D) \(36 \left( \cos \frac { 4 \pi } { 3 } + i \sin \frac { 4 \pi } { 3 } \right)\)
• E) \(18 \left( \cos \frac { 4 \pi } { 3 } + i \sin \frac { 4 \pi } { 3 } \right)\)

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