Express cos2β \cos^2 \beta\,cos2β in terms of cos2β\cos 2\betacos2β.
Find ∫cos2β dβ\int \cos^2 \beta \, d\beta∫cos2βdβ.
Practise Edexcel A Level Maths 11.3 Using Trigonometric Identities with exam-style questions for A Level Maths. 32 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.