For a right-angled triangle, follow these steps to calculate the length of a side, \(x\), when another side and an angle Ɵ is given: Formula triangles ... be labelled as hypotenuse (\(h\)).

What it means is that in a right triangle (where one angle equals 90°), the sum of the squares of two sides equals the square of the hypotenuse (the longest side).

The theorem defines the relationship between the three sides of a right-angled triangle, stating that the square of the hypotenuse equals the sum of the squares of the other two sides.

(Unsplash) Pythagoras' theorem, summarised by the equation a2+b2=c2, describes the relationship between the sides of a right-angled triangle, where the square of the hypotenuse is equal to the sum ...