Calcite (CaCO3CaCO3) is a crystal with abnormally large birefringence. The index of refraction for light with electric field parallel to the optical axis (called extraordinary waves or e-waves) is 1.4864. The index of refraction for light with electric field perpendicular to the optical axis (called ordinary waves or o-waves) is 1.6584.A.) Find the critical angle theta_ce for e-waves in calcite. This was 42.28 degrees.
B.) Find the critical angle theta_co for o-waves in calcite. I got 38.68 then 35.8 and am still wrong. Please help me find part B.