2025 SMBSS P1 Q2

2025 SMBSS P1 Q2

Secondary 4
4 marks

Given that \(\cot A=\dfrac q2\) where \(A\) is acute, express each of the following in terms of \(q\).

  1. \(\sec A\)[2]
  2. \(\sin2A\)[2]

Solution:

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Answer:(a) \(\dfrac{\sqrt{q^2+4}}q\). (b) \(\dfrac{4q}{q^2+4}\).

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