Modeling Ocean Tides

In one day, there are two high tides and two low tides in equally spaced intervals. The high tide is observed to be 6 feet above the average sea level. After 6 hours pass, the low tide occurs at 6 feet below the average sea level. In this task, you will model this occurrence using a trigonometric function by using x as a measurement of time. Assume the first high tide occurs at x = 0.

1,What are the independent and dependent variables?

2.

Determine these key features of the function that models the tide:

amplitude

period

frequency

midline

vertical shift

phase shift

3.Create a trigonometric function that models the ocean tide for a period of 12 hours.

4.What is the height of the tide after 93 hours?

need help please ,thank you