1. The problem statement, all variables and given/known data I've attached a picture of my problem (with diagram): 4.70 . "For the frame and loading show, determine the reactions at A and C." From the diagram, you can see that the metal object is made up of 2 parts: 1) A to B 2) B to D 2. Relevant equations 3. The attempt at a solution how do you arrive at the correct direction of the forces (ie: angle of the force; direction of its "application"). I have 2 interpretations and they will give different angles with which the force is applied (same magnitudes though). Which one is the correct interpretation? Because this is a statics problem (bodies at equilibrium), the sum of the forces = 0 (illustrated by the triangles). How do you logically determine which interpretation (of force directions) is correct when you do these problems? Thank you.