#13. When you board a Ferris wheel your feet are 1 foot off the ground. At the highest point of the ride, your
feet are 99 feet above the ground. It takes 30 seconds for the ride to complete one full revolution. What is the trigonometric equation for your height above the ground at t seconds after the ride starts. How to find at what two times within one cycle you are exactly at 90 feet off the ground.