Hello, I need help with my introduction to vectors book. I am trying to find out how I can draw vectors knowing only their norms and angles. How long do I draw them? How do I figure out the coordinates of the tail and the head from only knowing the norm? I know the tail will be (0,0) but I need to know how to figure out the coordinates to the head.

Here is a question scanned from my book.

"Given the norms and measures of the angles of direction U and V, find the following linear combinations in order to determine the norm and the measure of the angle of direction of W."

Any help appreciated please, I have been trying to figure this out all day and it's really the only thing stumping me so far in the book. Thank you