A person walks in the following pattern 49 km north then 15, Ask an Expert

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A person walks in the following pattern: 4.9 km north, then 1.5 km west, and finally 3.0 km south. (a) How far (in km) and (b) at what angle (measured counterclockwise from east) would a bird fly in a straight line from the same starting point to the same final point?

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