document.write( "Question 554140: At an ocean port on a certain day, the water has a depth of d metres at a time t hours past midnight. the data is modelled by the fuction d=5cos((pi/6.2)t)+10) \n" ); document.write( "

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At an ocean port on a certain day, the water has a depth of d metres at a time t hours past midnight. the data is modelled by the fuction d=5cos((pi/6.2)t)+10)
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