SOLUTION: Hi can someone help me with this problem please? THANK YOU! At 3:00 p.m. one summer day,the wave height off the coast of harbourtown could be modeled with the equation y=3.3

Question 1077469: Hi can someone help me with this problem please? THANK YOU!
At 3:00 p.m. one summer day,the wave height off the coast of harbourtown could be modeled with the equation y=3.3(2pi/7 t)+0.2,where t is measured in seconds and y in feet.Use the model to find the wave height from peak to trough.
Select One:
a. 3.3ft
b. 0.2ft
c. 0.4ft
d. 6.6ft
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
There is a typo in this problem.
If , would increase with time without limit.

It should be
or
.
(Waves use a cosine or sine trigonometric function term).
That way you would have an average height of 0.2 ft,
but height oscillates between times where
(or depending on how the function is written),
and times where the same trigonometric function's value is .
Since the trigonometric function is multiplied times ,
that term would oscillate between and ,
a difference of .
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