8
QuizMultiple Choice
Powers and Roots of Complex Numbers
Question 8 • Precalculus
Which number represents a square root of ?
Answer
A
3 (cosine ( StartFraction pi over 8 EndFraction) plus i sine (StartFraction pi over 8 EndFraction))
B
3 (cosine ( StartFraction pi over 4 EndFraction) plus i sine (StartFraction pi over 4 EndFraction))
C
3 (cosine ( StartFraction 5pi over 6 EndFraction) plus i sine (StartFraction 5pi over 6 EndFraction))
D
3 (cosine ( StartFraction 3pi over 2 EndFraction) plus i sine (StartFraction 3pi over 2 EndFraction))