Suppose a triangle has sides a b and c and the angle opposite the side of length a is obtuse.What must be true?A. a^2+b^2<c^2

When a triangle is obtuse, the length of c^2 is bigger than the combined lengths of a^2 and b^2.

a^2+b^2<c^2

"A" is the best answer.

I hope this helps!
~kaikers