Determine the magnitude of the vector difference V' = V2 - V1 and the angle 0, which V' makes with the positive x-axis. Complete both (a) graphical and (b) algebraic solutions. Assume a = 3, b - 7, V1 = 17 units, V2 = 22 units, and 0 = 56. -X Answers: (a) V = i units (b) ex =