That makes a lot more sense now! The issue I was having was figuring out which angle I needed to designate theta2. Man, it's been a long time since I've used geometry. Thank you!
I'm unsure of the base angles, it isn't given to us. I now realize that I use 45 deg because you're supposed to use the top angle of the triangle (so, where the right angle is) and divide that by two, but I don't understand why you use that angle over all the other ones...
Homework Statement
This is one of my homework questions. I think I have the right answer, but I don't understand how to figure out the "given" angle, so if someone could explain it to me, that would be great! Be sure to look at the picture attached...it's what's tricking me.
A prism...