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Trig general solutions Question (1 Viewer)

coyazayo

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You are at Risser's beach to search for interesting shells. At 12pm on 19th June, the tide is in (i.e the water is at its deepest.) At that time you find that the depth of the water at the end of the breakwater is 15m. At 8pm the same day when the tide is out, you find that the depth of the water is 11m. Assume that the depth of the water varies sinusodially with time.

1. Derive an equation expressing depth in terms of the number of hours that have elapsed since 12 noon on 19th June

2. Using the general solutions formula, find out what the earliest time on 20th June that the water will be at 12.7 m deep
 

InteGrand

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You are at Risser's beach to search for interesting shells. At 12pm on 19th June, the tide is in (i.e the water is at its deepest.) At that time you find that the depth of the water at the end of the breakwater is 15m. At 8pm the same day when the tide is out, you find that the depth of the water is 11m. Assume that the depth of the water varies sinusodially with time.

1. Derive an equation expressing depth in terms of the number of hours that have elapsed since 12 noon on 19th June

2. Using the general solutions formula, find out what the earliest time on 20th June that the water will be at 12.7 m deep


 
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