Solve, for −180≤x≤180-180 \leq x \leq 180−180≤x≤180, the equation,
2cot2x−cosec2x+cosecx=4 2\cot^2x - \text{cosec}^2x + \text{cosec}x = 4 2cot2x−cosec2x+cosecx=4Give your answers to 1 decimal place where appropriate.
54 exam-style questions on Edexcel A Level Maths Trigonometric Functions, covering 6.1 Secant, Cosecant and Cotangent, 6.2 Graphs of Sec x, Cosec x and Cot x, 6.3 Using Sec x, Cosec x and Cot x, 6.4 Trigonometric Identities, and 6.5 Inverse Trigonometric Functions. Each one has a worked solution and a mark scheme showing where the marks go.