Sketch on the same diagram, the graph of $y = 3 \cos 2x + 1$ and the graph of $y = \sin x$ for \

Question

Sketch on the same diagram, the graph of $y = 3 \cos 2x + 1$ and the graph of $y = \sin x$ for $0{}^\circ \le x \le 360{}^\circ$.[4] State the number of solutions in the interval $0{}^\circ \le x \le 360{}^\circ$ for the equation $\sin x - 1 = 3 \cos 2x$.[1]

Accepted Answer

(a) Sketch using the stated key points (b) $4$ solutions

2023 ACSBR AM S3 EOY Q6

2023 ACSBR AM S3 EOY Q6

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