You look directly overhead and see a plane exactly 1.5 km above
e4(l+t k*f24sqksijzhyg s(twf3o 5 . the ground flying faster than the speed of sound. By the time you
3*s 42+s(o jt4igyf(fkksqt .elwhz 5hear 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