0606 P12 - Mar 2024 - Q1 - 5 marks
7275
Given that \(y=2+4 \cos 3 \theta\), for \(-120^{\circ} \leqslant \theta \leqslant 120^{\circ}\), (a) write down the amplitude of \(y\)
(b) write down the period of \(y\).
(c) On the axes, sketch the graph of \(y\).
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