1. The problem statement, all variables and given/known data Problem 4.36 http://xps2pdf.co.uk/4c82ad8dcb91d5507169e0a18804ea30bf81d592/4.36.pdf [Broken] 2. Relevant equations 3. The attempt at a solution I am not sure if I am doing this correctly..there is a lot of information that I am not using to solve the problem (i.e. all the different distances, as well as the 30°. When determining the direction of a reaction force (Say A for example) do I just pick an arbitrary direction and if it comes out negative I know it's direction is opposite of what I put it as? I chose the moment at point A because I knew the moments of force A would be zero, leaving me with only the applied force and force E, which has a roller on it so it can only have a reaction force in one direction.