The state of stress at a point is shown in the figure below. (Figure 1) A. Determine the principal stresses. B. Determine the orientation of principal planes of stress. C. Determine the maximum...

The state of stress at a point is shown in the figure below. (Figure 1) A. Determine the principal stresses. B. Determine the orientation of principal planes of stress. C. Determine the maximum in-plane shear stress. D. Determine the average normal stress. E. Determine the orientation of the planes of maximum in-plane shear stress.