Three force vectors act on a free body at the origin as shown. Place your answers in the boxes rovided. F1 = 3 <3.0 , 1.2 > N
F2 = 4.0 1 -3.2jN
F3 = 6.2 N at 45° relative to the positive x-axis
a) Report the unit vector in the direction of F3 (in unit vector or i, j,k notation to 4 significant figures).
b) Calculate the resultant force R, which is the sum of the three forces, F1, F2 and F3 (in unit vector notation or i, j,k notation to 4 significant figures.).