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 ...

The mathematical study of triangles has just got a whole lot simpler, according to a researcher who says his new theory of trigonometry is easier to use and more accurate. Associate Professor Norman ...

Triangles are three-sided polygons that have three angles. In this article, we will explore different methods to calculate the angle of a triangle, including the use of trigonometric functions and ...

Using a unit circle can help develop a deeper understanding of trigonometry in right-angled triangles. In this maths lesson, students explore the behaviour of a radius vector as it rotates around a ...

Alternate interior angles are pairs of equal angles formed on opposite sides of a transversal, but inside two parallel lines. Angles of elevation and depression are alternate interior angles. That is, ...