Express cos2x \cos^2 x\,cos2x in terms of cos2x\cos 2xcos2x.
Find: ∫cos2x dx\int \cos^2 x \, dx∫cos2xdx.
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.