0606 P12 - Jun 2019 - Q9 - 9 marks
8271
The diagram shows the curve \(y=4+2\cos3x\) intersecting the line \(y=5\) at the points \(P\) and \(Q\).
(i) Find, in terms of \(\pi\), the \(x\)-coordinate of \(P\) and of \(Q\).
(ii) Find the exact area of the shaded region.
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