Final answer:
The interference pattern that is likely to occur when two speakers face each other and emit sound waves of the same wavelength is destructive interference.
Step-by-step explanation:
The interference pattern that is likely to occur when two speakers face each other and emit sound waves of the same wavelength is destructive interference. In destructive interference, the waves combine to create regions where the crests of one wave overlap with the troughs of the other wave, resulting in cancellation of the wave amplitudes.