Question

During a fishing trip Alex notices that the height h of the tide (in metres) is given by h=1−(1/2)*cos(πt/6) where t is measued in hours from the start of the trip. (a) Enter the exact value of h at the start of the trip in the box below.

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Clarabelle

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42 Answers

At start of trip t=0.
So cos(πx0/6)=cos(0)=1
So h=1-(1/2)xcos(0) =1-1/2=1/2

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