Thread: complex number polar form

convert the complex number -8+5i into the form re^itheta
does it mean the same as polar form so i will get
9.4<2.59
so 9.4cos 2.59 +9.4 sin 2.59 =-8+5i
or is it asking for something else any help would be very greatful
also i have a couple of these and also dont understand
evaluate;
3e^2i
e^iPi
and a couple more with basically the same things but dont know what to do thank you for any help cheers