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# A buoy floating in the sea is bobbing in simple harmonic motion with amplitude 13 in and period 0.2 seconds. Its displacement dfrom sea level at time...

How do I know if it's using sin or cos? what are the differences and can it be solved without graphing?

A buoy floating in the sea is bobbing in simple harmonic motion with amplitude 13 in and period 0.2 seconds. Its displacement dfrom sea level at time t= 0
seconds is 0 in, and initially it moves upward. (Note that upward is the positive direction.) Give the equation modeling the displacement d as a function of time !. d=|] DD % ME 7: El sin [1 ElcosEl

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