In (Figure 1), F1 = 42 lb . Figure1 of 1 Two force vectors act on a free end of a pipe in the x y z space. The pipe lies on the negative x axis with its free end at the origin. Vector F subscript 1 extends in the positive x and y and negative z directions, making an angle of 30 degrees with the x y plane. Its projection onto the x y plane makes an angle of 30 degrees with the positive y axis. Vector F subscript 2 of 25 pounds extends in the negative x and positive y and z directions, making an angle of 60 degrees from both the y and z axes. The angle between the forces is theta. Part A Determine the magnitude of the projection of the force F1 along the line of action of F2