Question

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.

Answer 1

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

Answer 2

My answer is 3.0505. The correct answer is 2.1

Answer 3

is that the given equation

Answer 4

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

Answer 5

we have to take a look that function

Answer 6

What about?

Answer 7

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

Answer 8

A=4

Answer 9

hold on let me work this out

Answer 10

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

Answer 11

Affirmative?

Answer 12

the the min should be at 6.2

Answer 13

MY value for "b" is pi/6.2.

Answer 14

Wadda bout my textbook?

Answer 15

your right

Answer 16

yay.

Answer 17

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

Answer 18

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

Answer 19

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

Answer 20

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

Answer 21

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