An observer stands 3 m from speaker a and 4 m from speaker b. both speakers, oscillating in phase, produce 170 hz waves. the speed of sound in air is 340 m/s. what is the phase difference (in radians) between the waves from a and b at the observer’s location, point p?

The pilot of a helicopter hovers at an altitude of 1200 feet over a park. the angle of depression to the base of a statue is 17 degrees. the angle of depression to the nearest park exit, in line with the statue, is 14 degrees. to the nearest foot, what is the distance from the statue to the exit?