Question 930437: find the angles of a triangle with sides of 10, 15, 20
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! find the angles of a triangle with sides of 10, 15, 20
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Pick an angle, use the Cosine law.
Then use the Law of Sines for the 2nd angle.
Then the 3rd angle = 180 - the sum of the other 2.
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If you're gonna do a lot of these, make and Excel sheet.
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