The state of plane strain at a point is represented by the components epsilon_x = 90 times 10^-6, epsilon_y = -80 times 10^-6 and gamma_xy = -150 times 10^-6. (a) Determine the principal strains...

The state of plane strain at a point is represented by the components epsilon_x = 90 times 10^-6, epsilon_y = -80 times 10^-6 and gamma_xy = -150 times 10^-6. (a) Determine the principal strains epsilon_1 and epsilon_2 (b) Determine the strain components epsilon_a, epsilon_b, and epsilon_c, related to the strain rosette shown below in Figure 2(b):