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Homework Help: Resultant displacement of vectors

  1. Sep 11, 2013 #1
    1. The problem statement, all variables and given/known data
    Find the resultant displacement(magnitude and direction of the following vectors: 12.3m North, 45.6m East, 78.9m West, 14.7m South

    2. Relevant equations

    c=sqrt a^2 + b^2

    3. The attempt at a solution
    Do you just add the vectors so the north and south added together will give you 2.4m, etc then use Tan inverse to get the angle? when I did that... I got 33.4m for the magnitude and 85.9 degrees for the direction , however do you need to minus that from 270 to get 184.1 degrees? Am i doing this right?
  2. jcsd
  3. Sep 11, 2013 #2
    Draw a diagram and show us
  4. Sep 11, 2013 #3
    i just drew it on a cartesian plane so it is in the third quadrant.. the y axis is -2.4m and the x axis is -33.3m I got those numbers from adding the directions together.
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