February 24, 2017

Homework Help: Pre-Calculus

Posted by Becky on Monday, January 28, 2013 at 6:59pm.

For a boat to float in a tidal bay, the water must be at least 2.5 meters deep. The depth of the water around the boat, d(t), in meters, where t is measured in hours since midnight, is d(t)=5+4.6sin(0.5t)

Use three decimal places in all intermediate calculations.

(a) What is the period of the tides in hours?
Round your answer to three decimal places.

(b) If the boat leaves the bay at midday, what is the latest time it can return before the water becomes too shallow?
Round your answer to three decimal places.

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