(a) Write down the amplitude of \(4 \cos \left(\frac{x}{8}\right)+2\). [1] (b) Write down the period, in degrees, of \(4 \cos \left(\frac{x}{8}\right)+2\). [1] (c) Solve the equation \(4 \cos \left(\frac{x}{8}\right)+2=0\) for \(-1080^{\circ} \leqslant x \leqslant 1080^{\circ}\). [3] (d) On the axes sketch the graph of \(y=4 \cos \left(\frac{x}{8}\right)+2\) for \(-1080^{\circ} \leqslant x \leqslant 1080^{\circ}\). [2] ![](https://cdn.mathpix.com/cropped/68840ece-e49c-4b14-a720-a9d105d091f7-02.jpg?height=1036&width=1696&top_left_y=1553&top_left_x=186)

2026 - M/J - 0606/21 | Q2

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(a) Write down the amplitude of \(4 \cos \left(\frac{x}{8...