f1 is 30 degrees above x axis. f2 is 15 degrees below x axis and 1500n. f3 is 15 plus 35 degrees below xaxis. x axis is as per normal 90 degrees.Three cables are used to drag a heavy crate on a horizontal surface as shown in Figure 1(b). The resultant of these three forces has a magnitude of 2500 N and its line of action is directed along the x axis. Determine the magnitudes of forces F1 and F3.