Calculating Area of a Spherical Triangle

[Weave]

I did not know where to post this but I'm posting it here.
I have just been pondering these pass couple days on how would you find the area of a sphereical trangle.
HOW WOULD YOU DO IT?

 

[robphy]

Spherical Excess
http://mathworld.wolfram.com/SphericalTriangle.html

 

[Weave]

So a sphereical triangle is an example of non-euclid geometry right?

 

[robphy]

So a sphereical triangle is an example of non-euclid geometry right?

The geometry of the sphere [the two-dimensional surface of a ball] is an example of a noneuclidean geometry [since the Parallel Postulate doesn't hold]. A triangle on this surface reveals this because the sum of its interior angles is not 180^o.