In a 3cm, 4cm, 5cm triangle, find the size of the smallest angle correct to the nearest minute plzz help :confused: :confused:

Since a 3x4x5 triangle is a right triangle ( I don't think it could be any other type... though correct me if I'm wrong. 3^2+4^2=5^2), you know the biggest angle is 90, and the side oppisite is 5cm.

I believe you can use the law of cosines to solve from there.

Hope this helps get you in the right direction at least. It's been ages since I've done trig or geometry.

Quote:

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Originally Posted by retsoksirhc

Since a 3x4x5 triangle is a right triangle ( I don't think it could be any other type...though correct me if I'm wrong. 3^2+4^2=5^2), you know the biggest angle is 90, and the side oppisite is 5cm.

I believe you can use the law of cosines to solve from there.

Hope this helps get you in the right direction at least. It's been ages since I've done trig or geometry.

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Sorry that did not help a lot

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