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

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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


--->

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