A. 2π/3
B. π/6
C. π/3
D. π
I: The modulus of √3+i/(1+i)(1+√3i) is 1/√2
II: The least positive value of n for which (1-i/1+i)n=1 is 2
If 1,ω,ω2 are the cube roots of unity, then (a+bω+cω2)/ (c+aω+bω2) is equal to:
If (cos 3α+i sin 3α)(cos 5β+i sin 5β)= cos θ+i sin θ then θ is
If x+iy= cis α cis β then the value of x2+y2 is
(x+y+z)(x+yω+zω2)(x+yω2+zω)=
If |z-1/z+a|=1 where Re(a)≠0 then the locus of z=x+iy is
The region represented by |z+a|+|z-a|<4a is
If a=2i+2j+k, a.b=14, axb=3i-j-8k then b=
(1/1+2ω)-(1/1+ω)+(1/2+ω)=
If ω is a complex cube root of unity then ( 1 - ω + ω2)6 + ( 1- ω2 + ω)6 =