Find the indicated roots. Write the answer in trigonometric form.Cube roots of 64(cos 270° + i sin 270°)
A. 4(cos 90° + i sin 90°), 4(cos 210° + i sin 210°), 4(cos 330° + i sin 330°)
B. 4(cos 180° + i sin 180°), 4(cos 240° + i sin 240°), 4(cos 120° + i sin 120°)
C. 4(cos 90° + i sin 90°), 4(cos 150° + i sin 150°), 4(cos 30° + i sin 30°)
D. 4(cos 90° + i sin 90°), 4(cos 210° + i sin 210°), 4(cos 210° + i sin 210°)
Answer: A
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A. 
B. 
C. 
D. 
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? 0
A. [1, 7]
B. (1, 7]
C. (-?, 1) or [7, ?)
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