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Topic: Finding angle in triangle
Replies: 2   Last Post: Sep 14, 2006 8:31 AM

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Vijaya Prasad Nalluri

Posts: 8
From: India
Registered: 4/10/06
Re: Finding angle in triangle
Posted: Sep 13, 2006 5:40 PM
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Apply Cosine Rule:
Cos A = (b^2 + c^2 - a^2) / 2bc

Chips wrote:
> I used to have this formula I think, but can't find it.
> If I know the lengths of the sides of a triangle (a, b, c) that does not
> necessarily have a right angle , is there a way to determine the angle A?
> Thanks,
> GC

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