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2026 ZHSS P2 Q4
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2026 ZHSS P2 Q4
Secondary 4
5 marks
State the range of principal values for
\(\sin^{-1}x\),
[1]
\(\tan^{-1}x\).
[1]
Without using a calculator, evaluate \(\dfrac{\sin60^\circ\times\tan45^\circ}{\cos30^\circ}+\cos^245^\circ\).
[3]
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Answer:
(a)(i) \([-90^\circ,90^\circ]\) (ii) \((-90^\circ,90^\circ)\) (b) \(\dfrac32\)
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