GCSE Edexcel Trigonometry - Edexcel Trigonometry in 3 dimensions - Higher The three trigonometric ratios; sine, cosine and tangent are used to calculate angles and lengths in right-angled ...

In 2022, U.S. high school students Calcea Johnson and Ne'Kiya Jackson astonished teachers when they discovered a new way to prove Pythagoras' theorem using trigonometry after entering a ...