1. The problem statement, all variables and given/known data A supersonic plane passes directly over an observer at point P, flying due west at an altitude of 11.6 km and a speed of Mach 1.60. What is the plane's horizontal distance from point P when the sonic boom is heard? I can assume T = 20C therefore Vs = 343 m/s 2. Relevant equations Mach = V/Vs Sinθ = V/Vs 3. The attempt at a solution I have no idea. I do know however a right triangle is involved, but I don't know where to go from there.