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 ...

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“They’re using a theoretical understanding of objects to do practical things,” says Daniel ... is the lengths of the three sides of a right-angled triangle, where each side is a whole ...

which states that "in a right-angled triangle the square of the hypotenuse is equal [to the sum of] the squares of the two other sides." Contrary to what generations of pupils have learned in high ...

Save guides, add subjects and pick up where you left off with your BBC account. It's one of those things most people remember from their school days. The angles in a triangle always add up to 180˚.