1. The problem statement, all variables and given/known data I am reviewing for a test tomorrow and cannot figure this problem out. A sign with the mass of 100kg hangs from the ceiling. If the two cables that are attach the sign to the ceiling are at a 50 degree angle from the horizontal, what is the tension in each cable? The answer is 640N, but i don't know why? 2. Relevant equations w=m*g 3. The attempt at a solution I understand that w=m*g, and i found that w=931N, However i have no idea what to do from here.