red x bro.. can't see anything..
Find the component form of a vector v given the magnitude of u and u+v and the angles that u and u+v make with the positive x-axis.
||u||=2, = 230, ||u+v|| = 8 = 80
I can't find any problem like this in the book, instructor gave us this as a take home problem to work on....
You could also set it up as a triangle with sides of length and and angle You can use the law of cosines to get
Edit: Now that you have posted the actual values, I see that your problem is much simpler. and make the same angle with the -axis, which means that they are parallel. What does that tell you about