SOLUTION: Find the angels in a triangle with sides 4 cm, 6 cm and 7 cm. Give your answers rounded to the nearest degree.

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Question 519551: Find the angels in a triangle with sides 4 cm, 6 cm and 7 cm. Give your answers rounded to the nearest degree.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Use the Law of Cosines:
7%5E2+=+4%5E2+%2B+6%5E2+-+2%2A4%2A6%2Acos%28C%29
cos(C) = -3/-48 = 1/16
C =~ 86 degs
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Find a 2nd angle the same way.
Then subtract the sum of those 2 from 180 to find the 3rd angle.