1. The problem statement, all variables and given/known data A beam ABC is fastened in C and is supported by the axially loaded bar BD. There is a load F working in A. Disregard any friction. Use the given measurements to find the force in the axially loaded bar BD, the force in C and the angle of the force in C by means of graphic solution. Original figure can be found here: http://i45.tinypic.com/14b2m9d.jpg 2. Relevant equations The line of action of the three forces must meet in one point for equilibrium to occur. 3. The attempt at a solution http://i46.tinypic.com/34ih0y0.jpg What I've done is draw the line of action for the forces working through F, B and C until they meet in a single point. I've then drawn the resulting vector triangle by starting with force F since that's the only one that is known. After that I continued the triangle by displacing the force working through C and then moved the force BD to complete the triangle. (I'm not sure if this is correct, so feel free to comment.) I'm not sure how to find the angle of the force working through point C. I assume they mean the angle of the force relative to the beam, but I'm not sure. Anyway, what I've tried is to use invers tangens 2,2 divided by 3,3(by means of using the measurements from the original figure) which gave an angle of 33,7 degrees, but this was not correct.