Find the distances you would have to fly first in a

Question

You fly 20.0 km in a straight line in still air a direction 40^o south of west.

(a) Find the distances you would have to fly straight south and then straight west to arrive at the same point. (This is equivalent to finding the components of the displacement along the south and west directions.)

(b) Find the distances you would have to fly first in a direction 45^o south of west and then in a direction 45^o west of north. These are the components of the displacement along a different set of axes -- one rotated 45^o.