SOLUTION: A triangle has sides of length 3,4 and 6 Prove that it is an obtuse angled triangle

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Question 756518: A triangle has sides of length 3,4 and 6
Prove that it is an obtuse angled triangle
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A triangle has sides of length 3,4 and 6
Prove that it is an obtuse angled triangle
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You can use the Cosine Law to find the angle opposite the side of 6
= 117.28 degs --> obtuse
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Or,
6^2 > 3^2 + 4^2 --> obtuse