Back to 7.6 Modeling with Trigonometric Functions

7.6 Exercise 45

Avg difficulty 2.5

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. If the rainfall fluctuates between a low of 2 inches on day 10 and 12 inches on day 55, during what period is daily rainfall more than 10 inches?

OpenStax Precalculus 2e, 7.6 Modeling with Trigonometric Functions, exercise 45

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.