Question

What does Pythagoras’ famous theorem involve?

Answer 1

sides and squares im sure

Answer 2

Right triangles only

Answer 3

a^2 + b^2 = c^2 only applies to right triangles

Answer 4

the law of cosines is a more general formula that reduces to the pythag thrm.

c^2 = a^2 + b^2 -2ab cosC. when C is 90 degrees, the last term zeros out.