Sketch the graph of $y = -4 \cos x + 3$ for $ 0 \leq x \leq \frac{7}{2}\pi$. By adding a st

Question

Sketch the graph of $y = -4 \cos x + 3$ for $ 0 \leq x \leq \frac{7}{2}\pi$. By adding a straight line to your sketch, find the number of solutions to the equation $4\pi \cos x - 3\pi + 2x = 0$ for $ 0 \leq x \leq \frac{7}{2}\pi$.

Accepted Answer

(ii) 4 solutions.

Trigonometry - Trigonometric Graphs and Parameters

Trigonometry - Trigonometric Graphs and Parameters

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