Mathematics 0580 · IGCSE · Trigonometric functions

Trigonometric functions — practice question

(main)[3]

Solve $3(2 + \cos x) = 5$ for values of $x$ on $0^{\circ} \le x \le 360^{\circ}$.

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This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “From $\cos x=\frac{5}{3}-2$” …

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