Q. Let `z_1` and `z_2` be nth roots of unity which subtend a right angle at the origin, then n must be the form `4k`.

Q. Let z_1 and z_2 be nth roots of unity which subtend a right angle at the origin, then n must be the form of .

Let z_1 and z_2 be the nth roots of unity which subtend a right angle at the origin then n must be the form

Let z_1 and z_2 be nth roots of unity, which subtend a right angle at the origin. Then n must be of the form:

Let z_(1) and z_(2) be n^(th ) roots of unity which subtend a right angle at the origin. Then n must be of the form.

Let z_(1) and z_(2) be nth roots of unity which subtend a right angle at the origin.Then n must be of the form (1) 4k+1 (2) 4k+2 (3) 4k+3(4)4k

Let z_1 and z_2 be the roots of the equation 3z^2 + 3z + b=0 . If the origin, together with the points represented by z_1 and z_2 form an equilateral triangle then find the value of b.

If z_(1) and z_(2) are two n^(th) roots of unity, then arg (z_(1)/z_(2)) is a multiple of