Let be a complex number such that where . If , then is… | CGP Edu

Maths Complex Number All Topic Question for Revision Test Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

Let be a complex number such that where . If , then is equal to [JEE (Adv) 2017]

A

-1

B

1

C

D

Text Solution

Verified by Experts

The correct answer is:

We have, and

. Clearly, is a cube root of unity such that

and .

Now,

Applying

.

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