Trigonometry close trigonometryThe study of sides and angles in triangles. can be used to find a missing angle in a right-angled triangle when two sides are known. An understanding of the three ...

Trigonometry can be used to find the length of a side in a triangle. Trigonometry close trigonometryThe study of sides and angles in triangles. can be used to find a missing side in a right-angled ...

This activity is perfect for upper primary and lower secondary students. It allows them to practise calculating angles in isosceles and scalene triangles. Note that unlike most treasure hunts, this ...

In this maths lesson, students are given 15 angles and 15 lengths and have to work out how they can be placed into 5 right-angled triangles. Finding triples of angles that sum to 180° is fairly easy, ...