Homework Help for Precalculus
Precalculus deals with preparatory or introductory fundamental abilities and knowledge required to study Calculus.
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The equation below gives the height h of a passenger on a Ferris wheel at any time t during the ride to be
h = 136 − 121 cos 𝜋 10 t
where h is given in feet and t is given in minutes. Use this equation to find the times at which a passenger will be 80 feet above the ground during the first revolution. Round your answers to the nearest tenth of a minute. Use your graphing calculator to graph the function and verify your answers. (Enter your answers as a comma-separated list.)
The table shows the average maximum temperature in Yellowstone National Park throughout the year. A graph of this data is given in the figure, where we have used m to represent the month and T the average maximum temperature. Find the equation of a trigonometric function to use as a model for these data. Assume m=1 corresponds to January.