A novice golfer on the green takes three strokes to sink the ball. The successive dis- placements are 6.8 m to the north, 5.8 m northeast, and 7 m 11◦ west of south. Start- ing at the same initial point, an expert (lucky) golfer could make the hole in a single displace- ment.
What is the magnitude of this single dis- placement?
Answer in units of m.

The angle with respect to the X axis: tan^(-1)(4.03/-2.77) = -55.5 degrees or 304.5 degrees or 55.5 south of west or 34.5 east of south (all these definitions are the same).

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