Solve the problem.A vibrating wire has a vertical displacement given by 
Assume b and t are constants. Write y as a cosine function of x.
A. y = 6 cos(2?x + bt)
B. y = cos(2?x - bt)
C. y = 12 cos(2?x + bt)
D. y = 6 cos(2?x - bt)
Answer: D
Mathematics
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