# PreCalculus

A piano tuner strikes a tuning fork for note A above middle C and sets in motion vibrations that can be modeled by the equation y = 0.001 sin 880 Pi(T). Find the amplitude and period for the function.

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1. amplitude : .001

period = 2π/(880π) = 1/440

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posted by Reiny
2. iog

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3. 65

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posted by 65

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