This distance is called the wave. period.
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A wavelength is the distance between two adjacent
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Use the formula v = f*wavelength: wavelength = v/f = 0.75m. The distance between adjacent compressions and rarefactions is half the wavelength. Distance = wavelength/2 = 0.375m =
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Find the angle from using trig  you have 1.1 m and 3.4 cm  you can get the angle from that : tan theta = 3.4 cm / 1.1 m. Then using d sin theta = n lambda  with n=1, d=0.040 mm
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