Answer: Option A
[tex]A=0.001[/tex]
Step-by-step explanation:
The sinusoidal functions have the following form
[tex]Y = Asin (bx)[/tex]
Where
[tex]\frac{2\pi}{b}[/tex] is the period of the function
A is the amplitude: Half the difference between the minimum value and the maximum value of the function.
In this case the function is:
[tex]y = 0.001sin(880\pi\phi)[/tex]
Therefore the amplitude of this equation is [tex]A=0.001[/tex]
