An off-axis lamina is loaded as follows. The angle between the fibers and the horizontal direction is theta.Lamina properties are:

E₁=145GPa

E₂=10.5GPa

G12=7.5GPa

V₁=0.28 Find such that the maximum and minimum principal strains in the coordinate system aligned with the fibers are equal to the maximum and minimum principal strains in the x-y coordinate system.