2. For the vectors V, and V, shown in the figure, (a) determine the magnitude S of their vector sum S-V₁+ V₂ (b) determine the angle a between S and the positive x-axis (e) write S as a vector in terms of the unit vectors i and j and then write a unit vector n along the vector sum S (d) determine the vector difference D - V₁-V₂ V₁4 units 45° 4111 30° V-3 units