Light from a vacuum is incident on a shard of Shaw onium (a newly discovered compound). The backside of the shard is up against an unknown material. When the light strikes the backside of the shard, total internal reflection occurs. The light then emerges from the side of the shard and resumes traveling through a vacuum. The index of refraction of Shaw onium is 2. 

Determine 01 & 02. vacuum o shard 01 82= o 81 02 75° unknown 32°

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unknown 02 vacuum shard 75° 32° unknown 02 vacuum shard 75° 32°