(main)[6]
Determine all solutions of $\sin \theta = 2\cos 2\theta + 1$ for $0^{\circ} \leq \theta \leq 360^{\circ}$.
Mathematics 9709 · AS & A Level · Trigonometry
Trigonometry — practice question
Worked solution & mark scheme
This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Use the correct $2A$ formula and derive an equation in $\sin\theta$” …
- Full mark scheme, point by point
- Step-by-step worked solution
- Write your answer & get it marked instantly by AI