Find all the solutions, in the interval 0≤x<2π0 \leq x < 2\pi0≤x<2π, of the equation
2cos2x+1=5sinx, 2 \cos^2 x + 1 = 5 \sin x, 2cos2x+1=5sinx,giving each solution in terms of π\piπ.
Practise Edexcel A Level Old Maths Trigonometry with exam-style questions for A Level Old Maths. 13 questions, matched to the Edexcel A Level Old Maths (9371) specification and written in Unit exams C1, C2, C3 and C4 plus two applied units (e.g. S1 and M1) 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.