Problem $3.$

The frame structure shown in Figure $3$ is fixed at A and pinned at

C$.$ The flexural rigidity $($ EI $)$ is constant. Neglect the contribution of

shear force and axial force on the displacement of the structure.

a$)$ Determine the degree of indeterminacy according to the force

method.

b$)$ Determine the support reactions at C$.$

c$)$ Draw the bending moment and shear force diagrams.

Please do it step$-$by$-$step. Thank you