(a)[2]
Sketch the graph of $y = \sin x$ over $0^{\circ} \le x \le 360^{\circ}$.
(b)[3]
Solve $3 - 2\sin x = \frac{13}{4}$ on $0^{\circ} \le x \le 360^{\circ}$.
Mathematics 0580 · IGCSE · Trigonometric functions
Sketch the graph of $y = \sin x$ over $0^{\circ} \le x \le 360^{\circ}$.
Solve $3 - 2\sin x = \frac{13}{4}$ on $0^{\circ} \le x \le 360^{\circ}$.
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A correct sine curve that goes through $(0,0)$, $(180,0)$ and $(360,0)$” …