1. The problem statement, all variables and given/known data A precast concrete wall is temporarily kept in its vertical position by ropes. Find the total force exerted on the pin at position A. The tensions in AB and AC are 420 lbs and 650 lbs. 3. The attempt at a solution I'm not sure where to start, because I don't know whether or not the tension from DB to DC also counts towards the force on the pin at A. I am also not sure on what values to add. Like if I add vectors AB and AC, is the result at the same angle?