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 ...

Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles. Trigonometry is found all throughout geometry, as every straight-sided shape may be broken ...

The author of Humble Pi whose @standupmaths YouTube channel has more than a million subscribers, explores the power of the triangle—from why mobile phones work when you’re on a train to what happens ...