Hi all! 1. The problem statement, all variables and given/known data What I'm trying to figure out is a reaction of a solid desk (don't know if this is the proper term) given this picture: http://twoflower.matfyz.cz/inc/eng.gif [Broken] I need to compute the reactions A, B and C (they corresponding to points denoted by 'a', 'b' and 'c' on the picture.) The dimensions 'a', 'b' and 'c' are constants and I know them. 3. The attempt at a solution So far I computed the reaction C from this equation: [itex] \cos 60 * F_3 + C*\sin 30 = 0 [/itex] But I cannot figure out, how to compute the reaction B and A, I can't put the right equations together... Could someone please point me to the right direction? Thank you in advance, best regards.