16. Trigonometric identities. Additional Maths OCR FSMQ

In this lesson we learn about the first two trigonometric identities and how to rewrite expressions using them so that they are written in terms of only one trigonometric function - an essential skill to then be able to solve more complicated trigonometric equations. Afterwards practise questions from exercise 8.3 in the textbook: www.hoddereducation.co.uk/subjects/maths/products/…)