Let u= <3,1> and v=<6,-1>

A. what is the angle between u and v?

B. find projvU

C. reoslve u into u1 parallel to v abd U2 perpendicular to v.

U(3,1), V(6,-1)

A. Tan A = (-1-1)/(6-3) = -2/3=-0.66666
A = -33.7o = 33.7 S. of E.