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

4 answers

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
This is probably silly, but where is the 2 in the beginning of all of those from?
2*2*2 = 8
Ohmygoodness. Hhaha. Thanks!
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