Perform the Operation Shown Below and Leave the Result in Trigonometric

question 47

Multiple Choice

Perform the operation shown below and leave the result in trigonometric form. $$\left[ 3 \left( \cos 100 ^ { \circ } + i \sin 100 ^ { \circ } \right) \right] \left[ 6 \left( \cos 230 ^ { \circ } + i \sin 230 ^ { \circ } \right) \right]$$

• A) \(18 \left( \cos 230 ^ { \circ } + i \sin 230 ^ { \circ } \right)\)
• B)​ \(18 \left( \cos 130 ^ { \circ } + i \sin 130 ^ { \circ } \right)\)
• C)​ \(18 \left( \cos 330 ^ { \circ } + i \sin 330 ^ { \circ } \right)\)
• D)​ \(9 \left( \cos 330 ^ { \circ } + \sin 330 ^ { \circ } \right)\)
• E)​ \(9 \left( \cos 130 ^ { \circ } + i \sin 130 ^ { \circ } \right)\)

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