Alright, so I'm having trouble with this question, I thought I solved it, but apparently I havent so I was wondering if anyone could tell me where I went wrong.
The average depth of water in a bay is 4m. At low tide the level is 2m. One cycle is completed every 12h and low tide last occurred at 15:00h. Calculate the next time the height of the tide will be 5.0m.
Here's what I got for the equation...
Amplitude = -2
Period = pi/6
Phase Shift = -15
Vertical Displacement = 4
therfore the equation is
When I solve for t I get 14.046h which when subbed back doesn't equal 5.
If someone can point out where I went wrong I'd appreciate it.