The basic idea
The basic idea
For example, sinx=1/2\sin x = 1/2sinx=1/2 has solutions x=π/6x = \pi/6x=π/6 and x=5π/6x = 5\pi/6x=5π/6 in the interval 0≤x≤2π0 \le x \le 2\pi0≤x≤2π. Here, π/6\pi/6π/6 is the acute reference angle, while 5π/65\pi/65π/6 is the standard-position angle in quadrant II.
Step-by-step lessons covering AQA A Level Maths 1.8.7 Solving trigonometric equations for A Level Maths. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build fluency with the core pure algebra and calculus toolkit early, since almost every mechanics and statistics topic on the course depends on it.