Solve, for −180≤y≤180-180 \leq y \leq 180−180≤y≤180, the equation,
3tan2y−sec2y+secy=3 3\tan^2y - \sec^2y + \sec y = 3 3tan2y−sec2y+secy=3Give your answers to 1 decimal place where appropriate.
Practise Edexcel A Level Maths 6.3 Using Sec x, Cosec x and Cot x with exam-style questions for A Level Maths. 16 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.