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After passing from one material into another a light ray makes an angle of 19.3^o with respect to the interface surface. If it came from a medium with index of refraction 1.35 and passed into a medium with index of refraction 1.79, what angle did the ray make with the interface when it was in the first medium?

^o?

After passing from one material into another a light ray makes an angle of 8.307^o with respect to the interface surface. If it came from a medium with index of refraction 1.36 and passed into a medium with index of refraction 1.31, what angle did the ray make with the interface when it was in the first medium?

^o?

After passing from one material into another a light ray makes an angle of 34.78^o with respect to the interface surface. If it came from a medium with index of refraction 1.94 and passed into a medium with index of refraction 2.14, what angle did the ray make with the interface when it was in the first medium?

^o?

After passing from one material into another a light ray makes an angle of 27.52^o with respect to the interface surface. If it came from a medium with index of refraction 1.75 and passed into a medium with index of refraction 1.54, what angle did the ray make with the interface when it was in the first medium?

^o?

After passing from one material into another a light ray makes an angle of 23.59^o with respect to the interface surface. If it came from a medium with index of refraction 1.58 and passed into a medium with index of refraction 1.35, what angle did the ray make with the interface when it was in the first medium?

^o?

After passing from one material into another a light ray makes an angle of 29.75^o with respect to the interface surface. If it came from a medium with index of refraction 1.95 and passed into a medium with index of refraction 2.14, what angle did the ray make with the interface when it was in the first medium?

^o?