Question

what is the frequency of the sinusoidal graph?
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Explanation:

Step1: Identify the period

The period $P$ is the horizontal length of one full cycle. From the graph, one cycle completes between $0$ and $\pi$, so $P = \pi$.

Step2: Calculate frequency

Frequency $f$ is $\frac{1}{P}$.
$f = \frac{1}{\pi}$

Answer:

$\frac{1}{\pi}$