Solve 5cos(x−40∘)=25\cos(x-40^\circ)=25cos(x−40∘)=2 for 0∘≤x<360∘0^\circ\leq x<360^\circ0∘≤x<360∘, giving answers to 2 decimal places.
42 exam-style questions on CCEA A Level Maths 1.4.6 Trigonometry. Each one has a worked solution and a mark scheme showing where the marks go.