You look directly overhead and see a plane exactly 1.5km above the ground flying faster than the

Question:

You look directly overhead and see a plane exactly 1.5km above the ground flying faster than the speed of sound. By the time you hear the sonic boom, the plane has traveled a horizontal distance of 2.0km. See Fig. 12-34. Determine.
(a) The angle of the shock cone, θ, and.
(b) The speed of the plane (the Mach number). Assume the speed of sound is 330m/s.

You look directly overhead and see a plane exactly 1.5km