A strain rosette with measurements in the direction of the applied unidirectional force, perpendicular and at 45 degrees is employed to measure strains on the free surface of aluminum alloy part with ex = 1400 x 10^-6 ; ey = -950 x 10^-6 and e45 = 1600 x 10^-6. Estimate the stresses sx, sy and txy and also the maximum normal stress and maximum shear stress.