(1) Representing a Non-Planar Force (Vector Notatioanector Addition/Dot Product) (5 pts) Three cables brace a newly planted tree as shown in Figure 1. Each cable has a tension of T. a) Determine the resultant force FR acting on the tree as a result of the three cables. Express F R in vector notation. b) Find the angle between cable AC and cable AD (i.e., the angle between F AC and FAD). c) Describe in words how you would change the position of C and D so that there are no net forces on the tree in the xy plane (and briey explain why). The tension in the cables remains the same (T), and they remain anchored to the tree at A and at B