Answer:
For finding frequency, we need to first find the period of the graph.
The period of a sinusoidal graph is the time interval in which it repeats its pattern.
In the graph, we can see, after [tex]1/period[/tex] time, it repeats its pattern.
Hence the period of the graph is [tex]\pi /2[/tex].
Now we need to find its frequency [tex]1/\pi /2[/tex]
The formula for frequency is [tex]2/\pi[/tex]
This is the answer
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