\mathrm{P}_{12} \cdot 33(\mathrm{a}) \sigma_{p 1}=32.9 \mathrm{ksi}, \sigma_{p 2}=5 \cdot 13 \mathrm{ksi}, \theta_{p}=-42.1^{\circ}, \tau_{\max }=13.87 \mathrm{ksi} \text { (c) } \tau_{\text {abs } \max }=16.44 \mathrm{ksi}
(a) Determine the principal stresses and the maximum in-plane shear stress acting at the point. (b) Show these stresses in an appropriate sketch (e.g., see Figure 12.15 or Figure 12.16). (c) Compute the absolute maximum shear stress at the point.