Hey guys, I would just like some confirmation that I got this question correct. 1. The problem statement, all variables and given/known data For the stress block shown in Figure 3a, using the stress equations; a) Calculate the stresses sigmax' sigmay' and taux'y' on a stress block rotated 15° clockwise from the x-y axes. b)Calculate the principal (normal) stresses and the principal in-plane shear stress (and corresponding normal stresses) and their orientation (rotation angle). Sketch both these situations on stress blocks. Assume plane stress conditions. View attachment 2012 Test 2 Q3.pdf 2. Relevant equations This PDF has the relevant equations. View attachment CIV2206_exam_2011_equations.pdf 3. The attempt at a solution Look at PDF in part a. Help would be much appreciated, Thanks in advance.