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 = cos(2?x - bt)
B. y = 4 cos(2?x + bt)
C. y = 8 cos(2?x + bt)
D. y = 4 cos(2?x - bt)


Answer: D

Mathematics

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