A wave represented by the equation `y=acos(kx-omegat)` is superposed with another wave to form stationary wave such that the point x=0 is a node. The equation for the other wave is:

A wave represented by the equation y = a cos(kx - wt) is superposed with another wave to form a stationary wave such that point x= 0 is a node. The equation for the other wave is

A wave representing by the equation y = A cos(kx - omegat) is suerposed with another wave to form a stationary wave such that point x = 0 is a node. The equation for the other wave is