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Math Help - Trigonometric Equations

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    Trigonometric Equations

    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. =)
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    Quote Originally Posted by Hellooo View Post
    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 ...

    y = A\cos(Bt)

    what's next ?
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