A person walks in the following pattern: 2.1 km north, then 3.2 km west, and nally 5.0 km south. (a) How far and {b} at what angle (measured counterclockwise from east) would a bird y in a straight line from the same starting point to the same nal point? {a} Number n Units V {b} Number n Units V eTextbook and Media Assistance Used Hint Assistance Used Superimpose an xyz coordinate system, such as this: x extends eastward. yextends northward. Then north is positive, west is negative. and south is negative. Add the three vectors, using the component technique of Sample Problem 3-5. Draw the three vectors and the components of their net vector. Is your angle for the net vector reasonable