An element in plane is subjected to stresses x and y, and an unknown value of as shown in. Figure Q1 it is known that the major principal stress of this element is equal to 145.93 MPa in tension. 80MPa + Txy 130MPa Figure Q1: Stress in Plane a) Compute the stress Txy (4 marks) (PO1, CO1, C3) b) Solve the minor principle stress and the orientation of the principle planes (10 marks) (PO1, CO1, C3)