Air at \(800^{\circ} \mathrm{R}\) and 15 psia is flowing at a Mach number of \(M=1.8\) and is deflected through a \(15^{\circ}\) angle. The directional change is accompanied by an oblique shock.

(a) What are the possible shock angles?

(b) For each shock angle, compute the temperature and pressure after the shock.