Problem 3-9
Find the magnitude and direction of the sum of the vectors A + B + C using the component technique. Assume two significant digits.
A = 2 km north, B = 30 km east, C = 50 km 55° west of north.

We have 3 vectors referred to the directions N, S, E, W and we must choose a set of coordinate axes. Of course any x, y set will do but which of the selections below would provide the simplest solution?