2025 IGCSE 0580 February/March P42 Q19

2025 IGCSE 0580 February/March P42 Q19

3 marks

Solve the equation \(2+5\cos x=0\) for \(0^\circ\leq x\leq360^\circ\).[3]

Solution:

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Answer:\(x=113.6^\circ\) or \(246.4^\circ\).

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