While following a treasure map, you start at an old oak tree. you first walk 825 m directly south, then turn and walk 1.25 km at 30.0° west of north, and finally walk 1.00 km at 32.0° north of east, where you find the treasure: a biography of isaac newton! (a) to return to the old oak tree, in what direction should you head and how far will you walk? use components to solve this problem. (b) to see whether your calculation in part (a) is reason- able, compare it with a graphical solution drawn roughly to scale.