9
QuizMultiple Choice
Powers and Roots of Complex Numbers
Question 9 • *PGHS Precalculus B
Which of the following is a square root of ?
Answer
A
square root 3 (cosine ( StartFraction 4pi over 45 EndFraction) plus i sine (StartFraction 4pi over 45 EndFraction))
B
square root 3 (cosine ( StartFraction 4pi over 9 EndFraction) plus i sine (StartFraction 4pi over 9 EndFraction))
C
square root 3 (cosine ( StartFraction 49pi over 60 EndFraction) plus i sine (StartFraction 49pi over 60 EndFraction))
D
square root 3 (cosine ( StartFraction 11pi over 9 EndFraction) plus i sine (StartFraction 11pi over 9 EndFraction))