Thread: Modulus of complex numbers

So, I wasn't there when they went through this in class, and even though I've looked on the internet, I have no idea what to do.
Help would be greatly appreciated. (:

Find the modulus of the following complex numbers:

3+5i

6-10i

7-8i

(3+5i)^3

Originally Posted by Fnus

So, I wasn't there when they went through this in class, and even though I've looked on the internet, I have no idea what to do.
Help would be greatly appreciated. (:

Find the modulus of the following complex numbers:

3+5i

6-10i

7-8i

the modulus of a complex number is given by:

example, find the modulus of



that's it

(3+5i)^3

another rule:

example, find the modulus of

Let

we want

now,

now try your problems