You look directly overhead
4-c+fzy2. fiiq  4+mybtysw(v  and see a plane exactly 1.5 km above the ground flying faster than the speed
24ifqzyf-c.bvsm4+yi (w   y+t of sound. By the time you hear the sonic boom, the plane has traveled a horizontal distance of 2.0 km. See Fig. 12–34. Determine
 (a) the angle of the shock cone, $\theta$  
   $^{\circ} $ 
 (b) the speed of the plane (the Mach number). Assume the speed of sound is 330 m/s