1. The problem statement, all variables and given/known data A fish is 30 cm below the surface of a lake. If he looks up he can see the entire sky compressed in a cone of angle θ, because of refraction of light at the water surface. (θ is the angle between the cone axis and the cone surface.) Determine θ. 2. Relevant equations n1*sin(theta 1)=n2*sin(theta 2) n1=1 n2=1.33 theta 1=90 theta 2=? 3. The attempt at a solution sin(90)/1.33=sin(theta 2) sin-1(0.672177943)=42.24 degrees This doesn't seem to be the answer though... Any help?