## NotTim Group Title 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

1. NotTim Group Title

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

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3. LagrangeSon678 Group Title

is that the given equation

4. NotTim Group Title

Yes. I had to figure it out myself, but eventually I came to that.

5. LagrangeSon678 Group Title

we have to take a look that function

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7. NotTim Group Title

I know that in this case, t=2, because of differetn start time.

8. LagrangeSon678 Group Title

A=4

9. LagrangeSon678 Group Title

hold on let me work this out

10. LagrangeSon678 Group Title

okay, we have 12.4 as the period and we have the max depth as 4m at 8 am

11. NotTim Group Title

Affirmative?

12. LagrangeSon678 Group Title

the the min should be at 6.2

13. NotTim Group Title

MY value for "b" is pi/6.2.

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16. NotTim Group Title

yay.

17. LagrangeSon678 Group Title

im just lost man, let me see if i can get some more help

18. NotTim Group Title

Ok. I'm got tons more of these too. Heh.

19. NotTim Group Title

Internet timed out. Sorry. Haven't been able to fix that.

20. NotTim Group Title

I may be making a consistent error in every calc i do.

21. NotTim Group Title

I think I know why. T is not in a bracket with 8. As in (t-8)