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5-6. Brianna is a technician at a radio station. She knows that, unlike many other types of waves,
radio waves can be very long. Below is the graph for a radio wave that is 1 meter in length.
Here is the function of the radio wave: f(x) = sin (21x)
Graph the function
Write down the amplitude, period, and frequency.
The amplitude is 1
The period is 2
The frequency is 1/2
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