2026 IGCSE Additional Mathematics May/June 0606/21 Q9

5 marks

Solve the equation \(5-2\operatorname{cosec}(\theta-0.5)=0\) where \(\theta\) is in radians and \(-3.5\le\theta\le3.5\).[5]

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Answer:\(\theta=-3.05,\ 0.912,\ 3.23\) radians.

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