Mathematics 0580 · IGCSE · Trigonometric functions

Trigonometric functions — practice question

(main)[3]

Solve the equation $2 + 5 \cos x = 0$ for $0^\circ \le x \le 360^\circ$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The answers are 113.6 and 246.4.” …

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