Posted by **Joe Rogers** on Thursday, September 20, 2012 at 9:33pm.

A hiker makes four straight-line walks

A 31 km at 299 degrees

B 32 km at 210 degrees

C 29 km at 59 degrees

D 22 km at 150 degrees

in random directions and lengths starting at

position (41 km, 41 km).

Which vector will return the hiker to the

starting point? All angles are measured in a

counter-clockwise direction from the positive

x-axis.

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