If youâ€™re taking the higher maths GCSE, there are certain values of sin, cos and tan that you need to know off by heart. Luckily in two of the three exams you will be allowed to use a calculator, but in the non-calculator exam you will need to know the… Continue reading How to use triangles to remember exact sin, cos and tan values

# Tag: cosine

## A guide to trigonometry (SOHCAHTOA) – Part 2

In the last blog, I introduced a method for using trigonometry to find the missing side in a right-angled triangle. This blog will build on that and show you how to find the missing angle in a right-angled triangle. I would recommend reading that before this one for an introduction… Continue reading A guide to trigonometry (SOHCAHTOA) – Part 2