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Double-Angle Formulae · CSEC Additional Mathematics

3 past-paper questions on Double-Angle Formulae, part of Trigonometry, from every CSEC Additional Mathematics paper on Quelpr.

  1. 4(b)(ii)2 marks· Additional Mathematics Q4 4(b)(ii)Calculate the exact value (in surd form if applicable) of sin 2θ.
  2. Q271 mark · multiple choice· CSEC Additional Mathematics · 2013 · Paper 1Given that \cos x = \frac{3}{5}, the value of \sin 2x is
  3. Q271 mark · multiple choice· CSEC Additional Mathematics · 2016 · Paper 1Given that x is acute and \cos x = \frac{3}{5}, then the value of \sin 2x is