The modulus and amplitude of are
√2 and π/6
1 and 0
1 and π/3
1 and π/4
The real part of the complex number is
1/5
-1/5
5
2/5
If Z = r (cos θ + i sin θ), then the value of is
cos 2 θ
2 cos 2θ
2 cos θ
2 sin θ
The conjugate of a complex number is . Then, that complex number is
If α and β are different complex numbers with |β| = 1 then is
0
3/2
1/2
1
Express in the standard form a+i b: ((-3+i) (4-2 i)
10+10 i
-10 -10 i
-10 + 10 i
None of these
The argument of the complex number is
π/3
π/4
π/5
π/6
If Z3 = -1/2 + √3/2 i, then the conjugate of (Z3)4 is.
If z is a complex number such that Re(z) = Im (z) , then
Re (Z2) = 0
Im (z2) = 0
Re (z2) = Im (z2)
z2 = 0
The modulus of -2 + 4i is
5√2
5/√2
2√5
√5
