Save guides, add subjects and pick up where you left off with your BBC account. The sides of right-angled triangles are labelled opposite, hypotenuse and adjacent. Trigonometry explores the ...

It is used to calculate the length of a side in a right-angled triangle and is typically written as a² + b² = c², where c represents the hypotenuse. Despite thousands of existing proofs ...

The sides of right-angled triangles are labelled opposite, hypotenuse and adjacent. Trigonometry explores the relationship between sides and angles in right-angled triangles. The hypotenuse is the ...