\fPart A The antenna tower is supported by three cables. (Figure 1) If the forces of these cables acting on the antenna are FB = 540 N , FC = 640 N and FD = 570 N , determine the magnitude of the resultant force acting at A. Express your answer with the appropriate units. HA FR = Value Units Submit Request Answer Part B Determine the coordinate direction angles of the resultant force. Express your answers using three significant figures separated by commas. IVO AEQ IT vec ? a, B, Y = Submit Request