The graph of a trigonometric function of the form y = A sin (Bx) or y = A cos (Bx) for B > 0 is given. Determine the equation of the function represented by the graph.
A. y = 3 cos 2x
B. y = 2 cos 
x
C. y = 2 cos 3x
D. y = 3 cos 
x
Answer: B
Mathematics
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