CAIE P2 2009 November — Question 5

Exam BoardCAIE
ModuleP2 (Pure Mathematics 2)
Year2009
SessionNovember
TopicAddition & Double Angle Formulae
5
  1. Express \(\cos ^ { 2 } 2 x\) in terms of \(\cos 4 x\).
  2. Hence find the exact value of \(\int _ { 0 } ^ { \frac { 1 } { 8 } \pi } \cos ^ { 2 } 2 x \mathrm {~d} x\).
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