Where is the diffraction angle in radians, 2 is the wavelength, and L is the width of the gap in the barrier. Radians
were then converted to obtain the diffraction angles in degrees. Now verify your calculations.
The predicted angle of diffraction with a 3 cm wavelength was ( degrees.
The predicted angle of diffraction with a 4 cm wavelength was ( degrees.
The predicted angle of diffraction with a 5 cm wavelength was
degrees.