1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Finding an angle with Picture

  1. Jun 27, 2012 #1
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution

    ivfj8z.jpg

    So angle 1 was giving and through that they found angle 2. I need help on how they found angle 2. The dark red arrow is a vector. This is a physics problem asking for something else but I got stuck here lol.
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
    Last edited: Jun 27, 2012
  2. jcsd
  3. Jun 27, 2012 #2
    Add another line parallel to ground intersect x-y origin.
     
  4. Jun 27, 2012 #3

    ehild

    User Avatar
    Homework Helper
    Gold Member

    The angles are congruent as their arms are pairwise perpendicular. The red vector is vertical, makes a right angle with the horizontal arm of angle 1. The other arm of angle 2 is perpendicular to the slope which is the other arm of angle 1. See picture: β=90-(90-α)=α.

    ehild
     

    Attached Files:

  5. Jun 29, 2012 #4
    What happend with the x axis? I updated the picture to look better.


    [url=http://postimage.org/][PLAIN]http://s17.postimage.org/h2qbp828v/Untitled.png[/url][/PLAIN]
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Finding an angle with Picture
  1. Find the angle (Replies: 4)

  2. Find the angle (Replies: 1)

  3. Finding an angle (Replies: 1)

  4. Find the Angle (Replies: 3)

Loading...