Applying Pythagoras Theorem
The Pythagoras theorem is one of the most known results in mathematics and also one of the oldest known. There are hundreds of demonstrations of this theorem. The understanding of the theorem is easy and has numerous applications in real life, as we will see in exercises in this section. It also has uses in advanced mathematics as well (vectorial analysis, functional analysis...)
2. The Theorem
- triangle is a right-angled triangle because it has a right angle, an angle of 90º or π / 2 radians
- the hypotenuse is the opposite side as the right angle.