How to Solve Snell's Law Problems?

Here's a step-by-step approach:

1. Draw a diagram showing the two media, normal line, incident ray, and refracted ray
2. Label all known values (angles and refractive indices)
3. Write down Snell's Law: n₁ sin θ₁ = n₂ sin θ₂
4. Substitute known values into the euation
5. Solve algebraically for the unknown variable
6. Use a calculator to find inverse sine if needed
7. Check that your answer makes physical sense (e.g., light bends toward normal when entering denser medium)