Question

How do you find `abs(3+4i)`?

Answer 1

The modulus `|a+bi|` is `sqrt (a^2+b^2)`

Explanation:

In this case `a=3, b=4`, so the modulus `|3+4i|` is:
`sqrt (3^2+4^2)= sqrt (9+16)=sqrt(25)=5`