Question

Consider three force vectors F1 with magnitude 42N and direction 140°, F2 with magnitude 27N and direction -110°, and F3 with magnitude 19N and direction 120°. All direction angles 0 (0 with a line inside) are measured from the positive x axis: counter-clockwise for 0 (with a line inside)>0 and clockwise for 0 (with a line inside)< 0. What is the magnitude F of the net force vector F=F1+F2+F3? Answer in units of °