Given three integer numbers and knowing that they form a valid triangle as:(int side1, int side2, int side3), how can I use a single c++ statement to test if an angle is obtuse

Answer 1

If the squares of one side is langer than the sum of squares of the other sides, the opposite angle is obtuse.

Answer 2

Just find the longest side and use the law of cosines only once.

Answer 3

Karl is right it is much easier