SOLUTION: Find the complex cube roots of 343(cos 291� + i sin 291�) A. -7(cos 97� + i sin 97�), 7(cos 137� + i sin 137�), -7(cos 177� + i sin 177�) B. 7(cos 97�

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Question 978131: Find the complex cube roots of 343(cos 291� + i sin 291�)
A.
-7(cos 97� + i sin 97�), 7(cos 137� + i sin 137�), -7(cos 177� + i sin 177�)
B.
7(cos 97� - i sin 97�), 7(cos217� - i sin 217�), 7(cos 337� - i sin 337�)
C.
7(cos 97� + i sin 97�), 7(cos 137� + i sin 137�), 7(cos 177� + i sin 177�)
D.
7(cos 97� + i sin 97�), 7(cos217� + i sin 217�), 7(cos 337� + i sin 337�)
E.
-7(cos 97� + i sin 97�), 7(cos 217� + i sin 217�), -7(cos 337� + i sin 337�)

Answer by KMST(5328) (Show Source):
You can put this solution on YOUR website!
If the complex number ,
with and ,
is the complex cube root of , then
for .
For that it must be
---> and
for
Dividing both sides of the equation by we get

--->

SOLUTION: Find the complex cube roots of 343(cos 291� + i sin 291�) A. -7(cos 97� + i sin 97�), 7(cos 137� + i sin 137�), -7(cos 177� + i sin 177�) B. 7(cos 97� - i sin 97�), 7(cos21