The figure shows a traveling sine wave of wavelength + 7.6 cm at time t=0.4s. The amplitude is A=1.7cm and the peak P is at x=1.27cm at this time. If the peak is at x=0 at t=0, write the wave function as the equation y(x,t) = Asin(kx t + ) . It is assumed that the wave travels to positive x.