The depth of water at a beach changes every 12 hours because of the tides.This forms a periodic function. You get up early on one of the days of spring breakand start measuring the depth. The depth at 8AM (t=0)is 7 feet, which is a high point.The low at 2PM is 1 foot deep.According to your model, detemine the height of the tide at 5PM.(Give the VALUE only. Do not include the unit of measurement in your answer.)4

Periodic function f(t)=A coswtA=AmplitudeAt t=0 , highest point=7 feetat t=6, lowest point=2 feet

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