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Math Help - Quick question

  1. #1
    Senior Member polymerase's Avatar
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    Quick question

    At point big blue, the high tides reach 1.5 metres and the low tides are 0.3 metres. Suppose that high tide occured at 3pm. Using a period of 12 hours, predict how high the tides will be at midnight.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by polymerase View Post
    At point big blue, the high tides reach 1.5 metres and the low tides are 0.3 metres. Suppose that high tide occured at 3pm. Using a period of 12 hours, predict how high the tides will be at midnight.
    <br />
h(t)=0.6~\cos(2 \pi (t-3)/12)+0.9<br />

    t in hours from 12 noon.

    RonL
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  3. #3
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    or h(t)=0.6~\sin{\left(\frac{\pi t}{6}\right)}+0.9
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