Welcome to Westonci.ca, where curiosity meets expertise. Ask any question and receive fast, accurate answers from our knowledgeable community. Discover in-depth solutions to your questions from a wide range of experts on our user-friendly Q&A platform. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

When using Snell's Law:
a) It doesn't matter where the angles are measured from.
b) It is important to measure angles from the plane of the surface.
c) It is important to measure angles from the normal to the surface.
d) The angles are measured from a convenient location.