1. The problem statement, all variables and given/known data Plane light waves are incident on a single slit of width 2.45 cm. The second dark fringe is observed at 44.3° from the central axis. What is the wavelength of the light? 2. Relevant equations θ=pλ/a...... where theta is in radians, p =2 (second light minimum), and a = slit width this seems like it should be a simple problem but I can't get the answer..any Help? 3. The attempt at a solution I tried 44.3°=.7732 rad so .7732=(2)(λ)/.0245 and solved for λ. Also, does come out in nano meters or meters? Thanks for your help!