In the picture I have attached, you have to resolve the two forces (T, equal value) as the red R down the middle, but I was always taught to resolve forces by connecting them up as shown by the green R at the bottom.
Am I getting confused between resolving forces and equilibria? What's going on? Should I just never use that method/what method should I use?
Usually that method (with the green R) seems to work if you arrange the forces to make a triangle