Can someone explain how to solve this problem? It was on the question marathon (page 3 or 4 I think, kenniky's problem on angle of deviation in prisms)
In the prism below, α is 35° and θ is 19°. The prism has index of refraction 1.45 and is in a vacuum
What is the deviation?
(It was 19 degrees between the light ray and prism face, not the normal)
I tried finding the initial angle of refraction, and then using that to find the second angle of incidence out of the prism by making a triangle with the apex angle, the complementary of the second angle of incidence, and the complementary of the first angle of refraction. But then I got around 95 degrees as the angle of incidence within the prism, which doesn't make sense, and that's as far as I got haha.
Am I taking the right approach? What do?