Answer:
Step-by-step explanation:
Let the equation of the cosine function is,
y = Acos(Bx)
From the graph attached,
A = Amplitude = [tex]\frac{1-(-1)}{2}[/tex]
= 1
B = [tex]\frac{2\pi}{\text{Period}}[/tex]
B = [tex]\frac{2\pi}{\frac{\pi}{2}-0}[/tex]
B = [tex]\frac{4\pi}{\pi}[/tex]
B = 4
Therefore, equation of the cosine wave given in the graph will be,
y = 1.Cos(4x)
y = Cos(4x)
