The route followed by a hiker consists of three displacement vectors , , and . Vector is along a measured trail and is 1490 m in a direction 18.0 ° north of east. Vector is not along a measured trail, but the hiker uses a compass and knows that the direction is 39.0 ° east of south. Similarly, the direction of vector is 23.0 ° 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 .
If we simplify the problem there are two unknowns namely the magnitudes of vector a and vector b
And the sum of the given three vectors is zero. We can easily solve the problem by resolving the vectors into their components along two perpendicular directions.
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