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guajiro [1.7K]
3 years ago
13

And please explain it?

Mathematics
1 answer:
Brums [2.3K]3 years ago
4 0
You probably jsut need to use law of cosines in order to solve for angle A

c^2 = a^2+b^2 -2ab \cos C
or
a^2 = c^2+b^2 -2cb \cos A
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