Extracted text: Using the Stiffness Method, determine the support reactions and the forces in all members (State whether the members are in tension or compression) in the truss shown below. (Note: The cross-section areas of the members are not the same.) (8 in ) 3 (6 in.2) (8 in.?) 16 ft (6 in.) (8 in.?) (8 in.?) 50 K 50 K 20 ft 20 ft E= 29,000 ksi %3D (6 in.³)