A twо-dimensiоnаl stress element is subjected tо the following stаte of stress: sigmа_x = [sx] MPa, sigma_y = [sy] MPa, tau_xy = [txy] MPa (a) Determine the principal stresses, and the orientation (theta_p) of the element on which they act (measured counterclockwise from the original x-axis). (b) Determine the maximum in-plane shear stress (tau_max) and the associated average normal stress (sigma_avg). (c) Draw a clearly labeled Mohr's Circle corresponding to this stress state. Indicate all key points: principal stresses, maximum shear stress, and center of the circle.