Hi everyone, first time post at physics forums, I hope to help out some people with calc and I hope to discuss some physics topics too! But however I have a homework question in MECH 234. 1. The problem statement, all variables and given/known data Find Tac + Tbc from the given picture: 2. Relevant equations ΣFx = 0 ΣFy = 0 3. The attempt at a solution Well first, since 500N is being pulled on the x axis- ΣFx = 0 = Tac*sin(50)+Tbc*sin(30) - 500 500 = Tac*sin(50)+Tbc*sin(30) The right side is the sum of all the Fx components and they must be equal to zero. ΣFy = 0 = Tac*cos(50)+Tbc*cos(30) The right side is the sum of all the Fy components and they must be equal to zero. When I try to solve the two equations (2 unkowns 2 equations) I just get crazy numbers. I do not know what mistake I could be making otherwise except the angles might be wrong. Or perhaps I should be using the law of cosines or sines?