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Homework Help: Static: Dot Product

  1. Oct 6, 2016 #1
    1. The problem statement, all variables and given/known data
    How would I find the X coordinate of point A.
    So far I have:
    A: ( X=??? Y=-231.125" Z=175")
    B: (X=0" Y=0" Z=144")

    https://physicsforums-bernhardtmediall.netdna-ssl.com/data/attachments/90/90134-44f7db5f8e2c5989352d374160952d17.jpg [Broken]
    2. Relevant equations

    3. The attempt at a solution
    https://physicsforums-bernhardtmediall.netdna-ssl.com/data/attachments/90/90135-0e378a7885d41efadbb78730140f9a77.jpg [Broken]
    Im thinking of 31^2+(-231.125^2)= hypotenuse= diagonal from B to A. Then I could solve for x since I have 2 sides of the triangle. But I'm not sure if it correct.

    Attached Files:

    Last edited by a moderator: May 8, 2017
  2. jcsd
  3. Oct 6, 2016 #2
    what is the angle between the vectors A and B ?
    say the angle is Theta then one can use scalar product of these two tp proceed towards finding x or not ?
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