OpenStax, Algebra and Trigonometry 2e §7.4 The Other Trigonometric Functions · Exercise 73 · Trigonometry · Unit circle

The Other Trigonometric Functions · Exercise 73

The amount of sunlight in a certain city can be modeled by the function $h = 16 cos (\frac{1}{500} d),$ where $h$ represents the hours of sunlight, and $d$ is the day of the year. Use the equation to find how many hours of sunlight there are on September 24, the 267th day of the year. State the period of the function.

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OpenStax, Algebra and Trigonometry 2e · §7.4 The Other Trigonometric Functions · Exercise 73

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