Question

Compute the modulus and argument of each complex number.
a. 1 + i
b. 4 – 4i
c. 2 + 5i
d. 2[cos (2pi/3) + i sin (2pi/3)]

Answer 1

The modulus is sqrt(a^2 + b^2)

I will do one of them, you can finish the rest

Modulus of 4-4i....a = 4, b = -4

Modulus = sqrt (16 + 16) = sqrt (32)

Answer 2

thanks! how would you figure out the argument though?

Answer 3

@Easyaspi314

Answer 4

and then just use tan