Trigonometric Equations

Jan 2010
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A boat tied up at a dock bobs up and down with passing waves. The vertical distance between its high point and its low point is 1.8m and the cycle is repeated every 4s. Determine a sinucosial equation to model the vertical position, in metres, of the boat versus the time, in seconds. Help Please, Thanks. =)
 

skeeter

MHF Helper
Jun 2008
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North Texas
A boat tied up at a dock bobs up and down with passing waves. The vertical distance between its high point and its low point is 1.8m and the cycle is repeated every 4s. Determine a sinucosial equation to model the vertical position, in metres, of the boat versus the time, in seconds. Help Please, Thanks. =)
you are given the period and enough info to find the amplitude of motion ...

\(\displaystyle y = A\cos(Bt)\)

what's next ?
 
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