How does the pythagorean inequality theorem prove acute triangles

The video tutorial explains the characteristics of right and acute triangles, focusing on their angles. It highlights that an acute triangle has all angles less than 90 degrees. The tutorial introduces the Pythagorean inequality as a method to determine if a triangle is acute, where the sum of the squares of two sides must be greater than the square of the third side.

What is the relationship between the angles in an acute triangle?

Explain the Pythagorean inequality used to identify an acute triangle.