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Homework Help: Find the angle theata for a vector

  1. Jan 15, 2008 #1
    1. The problem statement, all variables and given/known data
    Let angle theta be angle vector A which makes with the + x-axis measured counterclockwise from that axis. Find the angle theata for a vector that has the following components. ax=3.40 m. ay= -.700 m.


    2. Relevant equations
    ay/ax=tan theta.


    3. The attempt at a solution

    -7/3.4 =tan theta. I got -11.6 which is wrong.
     
  2. jcsd
  3. Jan 15, 2008 #2
    That should be correct. Try 360-11.6 = 348.4, which is really equivalent but that my be what they are looking for.
     
  4. Jan 15, 2008 #3
    anap40 has given you the desired result and why it is so.
     
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