Please clearly show the code and how you get the critical angle

Consider a beam of light traveling from water into air. The index of refraction of air is 1.0003; that of water is 1.33. The angle of incidence in the water is varied from 0 deg to 50 deg with an increment of 10 deg. Use Python to compute the angle of the refracted beam in the air (in degrees) for each value of the angle of incidence. What is the critical angle in these two media? If you did the calculations using Python, submit the code and output