Posted by
Anon on
.
Write the three cube roots of 8 cis (30°).

Precalculus 
Damon,
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

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

Precalculus 
Damon,
2*2*2 = 8

Precalculus 
Anon,
Ohmygoodness. Hhaha. Thanks!