Question

for any complex number, arg(z)+arg(z')=?
a) 0
b) π/2
c) π
d) 2π​

Answer 1

arg(z)+arg(z')=0

Hope it will helpfull to you!

Answer 2

Answer is zero

Let z =x+iy

z'= x-iy

arg(z) =y÷x

arg(z') = -y÷x

arg(z) +arg(z') =0