A hiker's trip consists of three segments. Path A is 8.0km long heading 60 degrees north of east. Path B is 7.0km long in a direction due east. Path C is 4.0km long heading 315 degrees counterclockwise from east.
a) graphically add the hiker's displacement in the A, B, C
b) graphically add the hiker's displacement in the C, B, A