Find: ∫0π4sin3xcos3x dx\displaystyle \int_0^{\frac{\pi}{4}} \sin 3x \cos 3x \, dx∫04πsin3xcos3xdx
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.