The force vector A has a magnitude of 91.0 newtons and points due east. The force vector B has a magnitude of 134 newtons and points 78° north of east. Use the graphical method and find the magnitude and direction of following forces.
(a) Vector Fa - Vector Fb (give the direction with respect to due east).
(b) Vector Fb - Vector Fa (give the direction with respect to due west).