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# Math Homework Help

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Thank you so much for the help!

Jul 26, 2020

#1
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I dont think I should do your homework for you, but I can give you a hint.

For 1)

Rotationally use the Law of Cosines until you got one of each.

Ex: First set angle B to C, then angle A, and so on.

For 2)

Use the law of cosines (again) to get a quadratic. The larger term is a_2, and the smaller term is a_1. (Further hint, the cosine of 60 is $$\frac{\sqrt3}{2}$$)

For 3)

Use the law of cosines, where 12 is c, 10 is b, and a is a.

Jul 26, 2020