In the truss shown in the given figure, the forces in the members AB and BC will be respectively (plus denotes tension)-A-zero and zeroB- W/cos 60° and + W tan 60°C- W/cos 60° and zeroD-zero and + W tan 60°-A-zero and zero

A zero and zero Consider B support, its roller support contains. It does not resist any loads because if given a load to the roller its move away from WRT force.