1. The problem statement, all variables and given/known data The drawing shows a rectangular block of glass (n = 1.52) surrounded by a liquid with n = 1.60. A ray of light is incident on the glass at point A with a 30.0° angle of incidence. At what angle does the ray leave the glass at point B? http://edugen.wiley.com/edugen/courses/crs1507/art/qb/qu/c26/ch26p_18.gif 2. Relevant equations n1sintheta1 = n2sintheta2 3. The attempt at a solution (1.52)sin(30) = (1.6)sintheta2 theta2 = 28.359 I have no idea what I did wrong.. should the angle be negative??