Write the three cube roots of 8 cis (-30°).

Answer 1

2 e^i(-30/3) = 2 cis -10
2 e^i(-30/3 +360/3)= 2 cis 110
2 e^i(-30/3 -360/3) = 2 cis -130

Answer 2

This is probably silly, but where is the 2 in the beginning of all of those from?

Answer 3

2*2*2 = 8

Answer 4

Ohmygoodness. Hhaha. Thanks!