3
QuizMultiple Choice
Performing Operations with Complex Numbers — Unit test
Question 3 of 10 • MO-Algebra II A
Which expression represents a cube root of –8?
Answer
A
2 (cosine ( StartFraction pi over 6 EndFraction) plus i sine (StartFraction pi over 6 EndFraction))
B
2 (cosine ( StartFraction pi over 4 EndFraction) plus i sine (StartFraction pi over 4 EndFraction))
C
2 (cosine ( StartFraction pi over 3 EndFraction) plus i sine (StartFraction pi over 3 EndFraction))
D
2 (cosine ( StartFraction pi over 2 EndFraction) plus i sine (StartFraction pi over 2 EndFraction))