Trig TH/CM Question
I have to practice Ocean tides, oscillating springs, and ferris wheel problems for a test tomorrow
Desired result is a full example of one of the problems, or a link to a website that has examples, im also concerned about getting good communication marks so i need to know how to do it properly on this question. one full example on how to solve this question so i can use it as a model to solve others would be optimal please and thank you
The water depth in a harbour is 21 m at high tide ad 11 m at low tide. One cycle is completed aproximaately every 12 h.
a) find the equation for the water depth as a function of time , t hours , after low tide
b) draw a graph of the function for the 48 h after low tide which occurred at 14:00
d) find the depth of the water at
i would like full answers to the quiestions above if possible because time is of the essence
i am not asking you to do my homework i just need an exaample, as you can see that is 1/2 of that question and i still need to practice other 3 situations.. i only put up essential part of the question
(b) Sketch graph attached.
Originally Posted by s.a.n.t.a.n.a
(i) At 17:45, t = 17.75 - 14.0 = 3.75. Put this value into the formula for d. Depth = 17.91 m.
(ii) At 21:00, t = 7 and d = 20.33 m
Thanx alot really helpd:)))