JEE MATHEMATICS MCQ: COMPLEX NUMBERS

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Application +4 | -1

Let

z_1

and

z_2

n

th roots of unity which subtend a right angle at the origin. Then

n

must be of the form

View answer and explanation

Correct option: D

4 k

Option D (

4k

) is correct because the angle between the nth roots of unity must be a right angle, implying that n is a multiple of 4.

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