Perform the Operation and Leave the Result in Trigonometric Form $\left( \cos 80 ^ { \circ } + i \sin 80 ^ { \circ } \right) \left( \cos 330 ^ { \circ } + i \sin 330 ^ { \circ } \right)$

question 240

Multiple Choice

Perform the operation and leave the result in trigonometric form. $\left( \cos 80 ^ { \circ } + i \sin 80 ^ { \circ } \right) \left( \cos 330 ^ { \circ } + i \sin 330 ^ { \circ } \right)$

• A) \(\cos 50 ^ { \circ } - i \sin 50 ^ { \circ }\)
• B) \(\frac { 1 } { 2 } \left( \cos 50 ^ { \circ } - i \sin 50 ^ { \circ } \right)\)
• C) \(\frac { 1 } { 2 } \left( \cos 80 ^ { \circ } + i \sin 80 ^ { \circ } \right)\)
• D) \(\frac { 1 } { 2 } \left( \cos 50 ^ { \circ } + i \sin 50 ^ { \circ } \right)\)
• E) \(\cos 50 ^ { \circ } + i \sin 50 ^ { \circ }\)

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