1. The problem statement, all variables and given/known data This is originally from a physics problem but it's more of a math question. How do I solve for theta? 2. Relevant equations 400 - Tcos(theta) = 0 -200 + Tsin(theta) = 0 Using those equations, I need to solve for theta. Also, knowing that tan(theta) = sin(theta)/cos(theta) is supposed to be relevant to this. 3. The attempt at a solution All I did was simplify the equations to 200 - Tcos(theta) + Tsin(theta) = 0 Not sure if that was a good idea or not but I'm suck.