National 5 Maths - Calculating the area of a triangle using trigonometry Revise how to calculate the area of a non right-angled triangle as part of National 5 Maths.

If we know the length of one side of a triangle – the baseline – and the two angles at its ends, we can use trigonometry, the mathematics of triangles, to calculate the lengths of the other ...

Two US college students, who discovered a new way to prove Pythagoras' famous 2,000-year-old theorem in 2022 have now come up with five different ways of solving the problem using trigonometry.