Problem 3-9 - Vector sum - (d)
Find the magnitude and direction of the sum of the vectors \(A + B + C\) using the component technique. Assume two significant digits.
\(A = 20\; km\) north, \(B = 30\; km\) east, \(C = 50\; km\; 55 ^\circ\) west of north.
Of course all choices are permissible but to choose \(x\) and \(y\) at an angle to the cardinal directions will complicate the solution.