1. The problem statement, all variables and given/known data
Look at the diagram. Draw the wavefronts as they would appear after the reflection. Draw and identify the following things on the diagram.
Angle of Incidence
Angle of reflection
2. Relevant equations
3. The attempt at a solution
I'm not even sure where to start, I don't quite understand the diagram. . if anyone can help with a starter, that would be great! =)