Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 3 - No. 9)

What is the Pythagorean theorem primarily used for?

Finding the angles in any triangle

Calculating the area of a triangle

Finding the sides of a right-angled triangle

Calculating the volume of a cube

The Pythagorean theorem is used to find the sides of a right-angled triangle.