1. The problem statement, all variables and given/known data A painting hangs from two identical silk ropes that form an angle of 120º. Both ropes make forces of 400 N each to keep it in place. 2. Relevant equations a. Find the combined force of both silk ropes.(I have already done it) b. How heavy is the painting?(need help in this one) 3. The attempt at a solution I dont know what the Formula I have to use, to resolve the second one.