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.
225 exam-style questions on WJEC A Level Maths 3.5 Trigonometry (A-level only), covering 3.5.1 Trigonometry (A-level only), 3.5.2 Trigonometry (A-level only), 3.5.3 Trigonometry (A-level only), 3.5.4 Trigonometry (A-level only), 3.5.5 Trigonometry (A-level only), 3.5.6 Trigonometry (A-level only), 3.5.7 Trigonometry (A-level only), and 3.5.8 Trigonometry (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.