2 sinusiodal waves are defined y1=2sin(20x-32t) y2=2sin(25x-40t) what is the phase difference between this two waves at point x=5 and t=2s. all length in cm. I sketch the graph y/x and y/t and both have their max amplitude at x=3.2 , and t=3.125s. so what is the different in phase? Arn't them in phase?