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OpenStudy (darkbluechocobo):
Help with applications of Cosine and Sine functions
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OpenStudy (darkbluechocobo):
The following\[f(x)=3\cos \frac{ \pi x }{ 6 }+9\] function represents the depth of water at the end of a boat dock where f(t) represents the depth of the water, in feet, x hours after noon. At 11.P.M, what will be the depth of the water? Round your answer to the nearest tenth.
Directrix (directrix):
11 p.m is 11 hours after noon on the same day. Evaluate:|dw:1423505773365:dw|
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