Question

Find the cube roots of 8(cos 216° + i sin 216°).

Answer 1

using nth root theorem

Answer 2

first find the cubed root of 8

Answer 3

3

Answer 4

http://www.mathsisfun.com/geometry/images/circle-unit-304560.gif
use this to find what cos 216 and sin 216 equal

Answer 5

i dont have to find it exactlu, i just have to use theorem, and since 216 isnt on the unit circle as one of the ratio, im probably going to end up with decimals