2025 IGCSE Additional Mathematics October/November 0606/23 Q7

2025 IGCSE Additional Mathematics October/November 0606/23 Q7

6 marks

Solve the equation \(\sec^2 3x+\tan3x-3=0\) for \(0^\circ\le x\le120^\circ\).[6]

Solution:

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Answer:\(x=15^\circ,38.9^\circ,75^\circ,98.9^\circ\)

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