Express cos2(4u)\cos^2(4u)cos2(4u) in terms of cos(8u)\cos(8u)cos(8u).
Find: ∫cos2(4u) du\int \cos^2(4u) \, du∫cos2(4u)du.
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.