1.

Let z_1,z_2 be the roots of the equation z^2+pz+q=0,p,q are complex numbers. Suppose A and B represent z_1 and z_2 in the complex plane . If angleAOB = alpha(ne0) and OA=OB (where O is the origin ) then p^2=

Answer»

`4qcos(alpha/2)`
`4qcos^2(alpha//2)`
`4q^2cos(alpha/2)`
`2q^2cos^2(alpha/2)`

ANSWER :B


Discussion

No Comment Found

Related InterviewSolutions