1. The problem statement, all variables and given/known data Two speakers, one directly behind the other and along the x-axis, emit sound waves along the x-axis. The speaker in the back emits sound with a wavelength of .02 m and the speaker in the front emits waves with a wavelength of .05m. If the two speakers are separated by 3 m, where along the x-axis will destructive interference first occur? 2. Relevant equations d sin(theta) = m(wavelength) 3. The attempt at a solution How do I use the above equation if there are two wavelengths that I need to use?