1. The problem statement, all variables and given/known data A beam of sunlight with a wavelength of 500 nm strikes an ice floe at an angle of 66.5 If ice has an index of refraction n=1.31, at what angle is the beam refracted? 2. Relevant equations Law of Refraction- n(i) sin 0(i)=n (r) 0 (r') 3. The attempt at a solution I'm completely lost. I am not familiar with the sin key.