document.write( "Question 1070792: a water wave is created in awater tank.it has an amplitude of 3 and aperiod of (4pi/5)find the equation of this as consine function. \n" ); document.write( "
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a water wave is created in awater tank.it has an amplitude of 3 and aperiod of (4pi/5)find the equation of this as consine function.
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\n" ); document.write( "For the period, 2pi/(4pi/5) = 5/2
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\n" ); document.write( "--> f(x) = 3cos(5x/2)
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