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NotTim

At an ocean port, the water has a max depth of 4m above the mean level at 8 A.M, and the period is 12.4h. Find the depth of the water at 10 A.M.

  • 2 years ago
  • 2 years ago

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  1. NotTim
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    The equation is\[h=4\cos[\pi/6.2t-8]\]

    • 2 years ago
  2. NotTim
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    My answer is 3.0505. The correct answer is 2.1

    • 2 years ago
  3. LagrangeSon678
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    is that the given equation

    • 2 years ago
  4. NotTim
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    Yes. I had to figure it out myself, but eventually I came to that.

    • 2 years ago
  5. LagrangeSon678
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    we have to take a look that function

    • 2 years ago
  6. NotTim
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    What about?

    • 2 years ago
  7. NotTim
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    I know that in this case, t=2, because of differetn start time.

    • 2 years ago
  8. LagrangeSon678
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    A=4

    • 2 years ago
  9. LagrangeSon678
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    hold on let me work this out

    • 2 years ago
  10. LagrangeSon678
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    okay, we have 12.4 as the period and we have the max depth as 4m at 8 am

    • 2 years ago
  11. NotTim
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    Affirmative?

    • 2 years ago
  12. LagrangeSon678
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    the the min should be at 6.2

    • 2 years ago
  13. NotTim
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    MY value for "b" is pi/6.2.

    • 2 years ago
  14. NotTim
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    Wadda bout my textbook?

    • 2 years ago
  15. LagrangeSon678
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    your right

    • 2 years ago
  16. NotTim
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    yay.

    • 2 years ago
  17. LagrangeSon678
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    im just lost man, let me see if i can get some more help

    • 2 years ago
  18. NotTim
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    Ok. I'm got tons more of these too. Heh.

    • 2 years ago
  19. NotTim
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    Internet timed out. Sorry. Haven't been able to fix that.

    • 2 years ago
  20. NotTim
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    I may be making a consistent error in every calc i do.

    • 2 years ago
  21. NotTim
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    I think I know why. T is not in a bracket with 8. As in (t-8)

    • 2 years ago
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