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while exploring a cave, a spelunker starts at the entrance and moves the following distances in a horizontal plane. she goes 75.0 m north, 250 m east, 125 m at an angle theta equal to 30.0 north of east, and 150 m south. find her resultant displacement from the cave entrance.


    the displacement for each leg of the journey is

    (108.25,62.5) since x=125cos30°, y=125sin30°
    add 'em up to get

    358.5m final displacement.

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