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Find the Indicated Roots

Question 329

Multiple Choice

Find the indicated roots. Write the answer in trigonometric form.
-Fourth roots of 256(cos 320° + i sin 320°)


A) 4(cos 320° + i sin 320°) , 4(cos 410° + i sin 410°) , 4(cos 500° + i sin 500°) , 4(cos 230° + i sin 230°)
B) 4(cos 80° + i sin 80°) , 4(cos 170° + i sin 170°) , 4(cos 260° + i sin 260°) , 4(cos 350° + i sin 350°)
C) 4(cos 80° + i sin 80°) , 4(cos 170° + i sin 170°) , 4(cos 340° + i sin 340°) , 4(cos 70° + i sin 70°)
D) 4(cos 160° + i sin 160°) , 4(cos 250° + i sin 250°) , 4(cos 340° + i sin 340°) , 4(cos 70° + i sin 70°)

Correct Answer:

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