Question

Find the component form of the sum of the two vectors:
||u||=4,angle of u= 30
||v||=4,angle of v= 30

Answer 1

the second angle should be 60

Answer 2

I got the sum is a vector with length = 7.727 and angle 45 degree

Answer 3

u + v = 5.5i + 5.5j, I believe that is the answer and it matches yours. I just used the unit circle expanded to a magnitude of 4.