Question

In Shadow Bay in July, high tide is at 1:30 pm. The water level is 4 feet at high tide and 0 feet at low tide. Assuming the next high tide is exactly 12 hours later and the height of the water can be modeled by a cosine curve, find an equation for Shadow Bay's water level in July as a function of time (t).

Answer 1

@aaronq @primeralph @precious32 please help

Answer 2

i got 4cos pi/2 t + 1

Answer 3

Should be 2cos(pi/6*t + 810 )+2. Where t is in minutes.