$($a$)$ Determine the transformation matrix T for each member of the truss shown.

$($b$)$Determine the structure stiffness matrics S for the truss shown.

$($c$)$ Determine the joint displacements, member axial forces abd supoort reactions forvthe truss shown, using matrix stiffness method.

E$A=$ constant

$E=29,000$ksi

$A=6i{n}^2.$