2.20 For a 60° angle lamina of boron/epoxy under stresses in global axes as σ = 4 MPa, σ₁ = 2 MPa, and Txy = -3 MPa, and using the properties of a unidirectional boron/epoxy lamina from Table 2.1, find the following 1. Global strains 2. Local stresses and strains 3. Principal normal stresses and principal normal strains 4. Maximum shear stress and maximum shear strain