\[y=a\cos (kx+\omega t)\] superimposes on another wave giving a statio – McqOptions

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1.	\[y=a\cos (kx+\omega t)\] superimposes on another wave giving a stationary wave having node at x = 0. What is the equation of the other wave [BHU 1998; DPMT 2000]
A.	\[-a\cos (kx+\omega t)\]
B.	\[a\cos (kx-\omega t)\]
C.	\[-a\cos (kx-\omega t)\]
D.	\[-a\sin (kx+\omega t)\]
Answer» D. \[-a\sin (kx+\omega t)\]

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