A. 8ab
B. 9ab
C. 11ab
D. 12ab
The multiplicative inverse of (4+3i) is
The complex numbers sin x+ i cos 2x- i sin 2x are conjugate to each other for
The modules of (3+2i)(2-i)/ (1+i) is
If the roots of (z - 1)n = i(z + 1)n are plotted in the argand diagram they are:
If three complex numbers are in A.P. then they lie on
If ω is a complex cube root of unity, then sin[(ω10+ω23)π-π/4]=
If α and β are complex cube roots of unity, then α4+β4+α-1β-1=
The straight line joining the points in Argand diagram given by 0+0i and 7+7i has equation
(2+ω2+ω4)5
If (cos 3α + i sin 3α) (cos 5β+i sin 5β)=cos θ+i sin θ then θ is