Simple Angle Problem

  • #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.
 

Answers and Replies

  • #3
What are the y and x component values?
 
  • #4
y component=50133.87
x component=-24833.87
 
  • #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.
 
  • #6
Ok, thank you
 

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