in tidal waves the sea level drops first leaving the seabed exposed (normally 30 feet below sea level), then it rises a equal distance above sea level. waves hitting a city have a max height of 38.9 meters. the cycle of rise and fall took between 26-35 minutes. assuming the waves follow a sine curve, with height Y varying sinusoidally with time T. -use f(t)=A sin(b(t))+k. to find a equation to represent this event. -what does A and K stand for? -how long was the seabed exposed at a period of 26 minutes? for the amplitude i got 38.9 meters-(-30ft)/2= 24.022 meters. for the K value or vertical shift i got 38.9M+(-30ft)/2= 14.878meters. im not sure if the period would be 35 minutes or 35-26=9 minutes. and im not sure if there is a horizontal shift or compression and would there be any limitations?