﻿ Let z1 and z2 be nth roots of unity which subtend a right angle at the origin. Then n must be of the form    : Kaysons Education

# Let z1 and z2 be nth Roots Of Unity Which Subtend A Right Angle At The Origin. Then n must Be Of The Form

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## Question

### Solution

Correct option is

4k

where r varies from 0 to n – 1 and each root is unimodular as

,

.

.

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