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OCW Scholar - Single Variable Calculus 8 Online
OpenStudy (anonymous):

Hey guys, in the solution for the exercise 2C-10 from the 4th problem set, shouldn't it be the ratio of cosines rather than that of sines? Thanks.

OpenStudy (anonymous):

Snell's Law: angles of incidence and refraction are measured between the normal to the surface and the appropriate ray. Diagram incorrectly labels angles.

OpenStudy (anonymous):

Thanx for your answer!

OpenStudy (anonymous):

heh. Glad I signed up -- I thought I was just going crazy with that problem. I couldn't figure out HOW they got sine! Thanks!

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