2025 Paradigm Sec 3 Mock EOY Q17

2025 Paradigm Sec 3 Mock EOY Q17

Secondary 3

3 marks

[Trigonometry Solving]

Solve the equation \(2\tan^2y+5\sec y-1=0\) for \(0\leq y\leq2\pi\).[3]

Solution:

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Answer:\(y=1.91\) or \(4.37\) radians.

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