The route followed by a hiker consists of three displacement
vectors , , and .
Vector is along a measured trail and is 2670 m in a
direction 27.0 ° north of east. Vector is not along a
measured trail, but the hiker uses a compass and knows that the
direction is 34.0 ° east of south. Similarly, the direction of
vector is 42.0 ° north of west. The hiker ends up back
where she started, so the resultant displacement is zero,
or + + = 0. Find the magnitudes of
(a) vector and (b)
vector .
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