@ThU Thanks for the reply. I was just trying to do your method, but i cant get maple to load the with(Phasors) package, and when i was trying to define my vectors, it did not define them with the polar notation in the definition. I cant figure out why? :( 

@acer Thanks for the reply. I find the way you descriped easy and manageable.

@Carl Love 

Thanks for your reply. That is exactly what i was looking for. Although i have one question, what if i need to make 3 vectors and i need to do like so (all the I's is vectors):

I4=I1-I2+I3

@tomleslie Thanks for the reply. I understand the way you define the vectors and the plot function you are using. But is there a way you can plus I1 and I2 together ( I1+I2=? ). The vector i am looking for will go from "origo" (where the vectors start from) and to the end of the green vector in your plot.