Two small forward-facing speakers are 2.50 m apart. They areboth emitting, in phase with each other, a sound of frequency 1100Hz in a room where the speed of sound is 344 m/s. A woman isstanding opposite the midpoint between the speakers and isinitially 35.0 m from the midpoint. As she slowly walks parallel tothe line connecting the speakers, at what angle θ (relative to thecenterline coming outward from the midpoint between the speakers)will she first hear no sound?
