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Simple Angle Problem

  1. Oct 16, 2009 #1
    1. Hi. This is just a detail that I am hung up on, and can't remember from high school. For my final angle calculation, theta=tan^-1(fy/fx), I get a negative angle, -63.65. I know my numbers are correct as part a of my problem was correct, I just can't remember how to make this angle positive so it makes sense. My angle is going in the north of west direction, which I also know is correct. Can someone explain to me how to make it postive?

    Thank you.
     
  2. jcsd
  3. Oct 16, 2009 #2
  4. Oct 16, 2009 #3
    What are the y and x component values?
     
  5. Oct 16, 2009 #4
    y component=50133.87
    x component=-24833.87
     
  6. Oct 16, 2009 #5
    I believe the angle is 116.35. Draw and solve the right triangle using your coordinates. Then, you can use the other trig functions to get the correct angle.

    I am sure there is a more sensible approach to my solution, but this was the first that came to my mind.
     
  7. Oct 16, 2009 #6
    Ok, thank you
     
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