Find All Cube Roots of the Complex Number $4 \operatorname { cis } 0 ^ { \circ } , 4 \operatorname { cis } 120 ^ { \circ } , 4 \operatorname { cis } 240 ^ { \circ }$

question 304

Multiple Choice

Find all cube roots of the complex number. Leave answers in trigonometric form.
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• A) \(4 \operatorname { cis } 0 ^ { \circ } , 4 \operatorname { cis } 120 ^ { \circ } , 4 \operatorname { cis } 240 ^ { \circ }\)
• B) \(4 \operatorname { cis } 0 ^ { \circ } , 4 \operatorname { cis } 60 ^ { \circ } , 4 \operatorname { cis } 120 ^ { \circ }\)
• C) \(4 \operatorname { cis } 45 ^ { \circ } , 4 \operatorname { cis } 165 ^ { \circ } , 4 \operatorname { cis } 325 ^ { \circ }\)
• D) \(4 \operatorname { cis } 90 ^ { \circ } , 4 \operatorname { cis } 210 ^ { \circ } , 4 \operatorname { cis } 330 ^ { \circ }\)

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