Question

Blanking on this for some reason:

Write the complex number in the form a + bi.

3(cos 60° + i sin 60°)

Answer 1

This should be easy.

Start with distributing 3

Answer 2

Then you get 3cos 60° + i 3 sin 60°)

Now all you have to do is solve cos 60 and sin 60

Answer 3

Basically do what geerky42 said. If you're having trouble finding the sin and cos, maybe this picture will help.

Answer 4

Now I remember. Thanks for the reminder on this lol.