Question

Which expression is a cube root of –2i?
A.cuberoot 2 (cos(60) + isin(60))
B. cuberoot 2 (cos(90) + isin(90))
C. cuberoot 2 (cos(260) + isin(260))
D. cuberoot 2 (cos(210) + isin(210))

Answer 1

https://gyazo.com/16189afeece4b5a062b27c0f96242122 a better picture of the answer choices.

Answer 2

Would it be 90 because that ends up equaling i cuberoot 2?

Answer 3

yes it would