A) \[{{y}_{2}}=-A\sin (kx-\omega t)\]
B) \[{{y}_{2}}=-A\cos (kx+\omega t)\]
C) \[{{y}_{2}}=A\sin (kx+\omega t)\]
D) \[{{y}_{2}}=Acos(kx+\omega t)\]
Correct Answer: B
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