A. 5
B. √5
C. 5√2
D. √5/√2
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
(1-ω)(1-ω2) (1-ω4) (1-ω5)(1-ω7) )(1-ω8)=
If (a1+ib1)(a2+ib2)……(an+ibn)=A+iB,then (a12+b12) (a22+b22)……. (an2+bn2) =
The amplitude of 1+cos θ+ i sin θ is