Question

root of unity, then the value of

                         

Solution

Correct option is

   

                    

SIMILAR QUESTIONS

Q2
Q3
Q4
Q5
Q6

cube root of unity, find the value of

                               

Q7
Q8
Q9

              

Q10

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