Monochromatic light passes through two slits separated by a distance of 0.0340 mm .If the angle to the third maximum above the central fringe is 3.31…

Monochromatic light passes through two slits separated by a distance of 0.0340 mm .If the angle to the third maximum above the central fringe is 3.31 ∘ , what is the wavelength of the light? =_______nm