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OpenStax, Precalculus 2e §7.6 Modeling with Trigonometric Functions · Exercise 24 · Trigonometry · Identities

Modeling with Trigonometric Functions · Exercise 24

Construct a sinusoidal function with the provided information, and then solve the equation for the requested values.

The sea ice area around the South Pole fluctuates between about 18 million square kilometers in September to 3 million square kilometers in March. Assuming a sinusoidal fluctuation, when are there more than 15 million square kilometers of sea ice? Give your answer as a range of dates, to the nearest day.

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OpenStax, Precalculus 2e · §7.6 Modeling with Trigonometric Functions · Exercise 24

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