OpenStax, Precalculus 2e §7.6 Modeling with Trigonometric Functions · Exercise 26 · Trigonometry · Identities
Modeling with Trigonometric Functions · Exercise 26
Construct a sinusoidal function with the provided information, and then solve the equation for the requested values.
During a 90-day monsoon season, daily rainfall can be modeled by sinusoidal functions. A low of 4 inches of rainfall was recorded on day 30, and overall the average daily rainfall was 8 inches. During what period was daily rainfall less than 5 inches?
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Precalculus 2e · §7.6 Modeling with Trigonometric Functions · Exercise 26
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