(a)[2]
Using the diagram, sketch the graph of $y = \sin x$ for $0^\circ \leq x \leq 360^\circ$.
(b)[3]
Solve the equation $5\sin x + 4 = 0$ for values of $x$ such that $0^\circ \leq x \leq 360^\circ$.
Mathematics 0580 · IGCSE · Trigonometric functions
Trigonometric functions — practice question
The diagram has $0^\circ$ to $360^\circ$ labelled along the $x$-axis, while the $y$-axis is scaled from $-1$ up to $1$.