Express cos2x \cos^2 x\,cos2x in terms of cos2x\cos 2xcos2x.
[2]
b.
Find: ∫cos2x dx\int \cos^2 x \, dx∫cos2xdx.
[3]
Markscheme
11.3 Using Trigonometric Identities Questions
31 exam-style questions on Edexcel A Level Maths 11.3 Using Trigonometric Identities. Each one has a worked solution and a mark scheme showing where the marks go.