Complex Numbers And Quadratic Equations question 257
Question: One of the cube roots of unity is [MP PET 1994, 2003]
Options:
A) $ \frac{-1+i\sqrt{3}}{2} $
B) $ \frac{1+i\sqrt{3}}{2} $
C) $ \frac{1-i\sqrt{3}}{2} $
D) $ \frac{\sqrt{3}-i}{2} $
Show Answer
Answer:
Correct Answer: A
Solution:
It is obvious because the cube roots of unity are $ 1,\frac{-1+i\sqrt{3}}{2},\frac{-1-i\sqrt{3}}{2} $
BETA
