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Yo, I'm trying to do my homework on the Law of Sines and I'm looking at the example to figure it out but I don't get how to simplify this step (circled in picture). When I type that into a calculator, I get -13.4.

Yo Im trying to do my homework on the Law of Sines and Im looking at the example to figure it out but I dont get how to simplify this step circled in picture Wh class=