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    Sunlight equation

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    The number of hours of daylight in city A is given by the following equation, where x is the number of days after January 1. With in a year, when does City A have 12 hours of day light? Give answer in days after January 1.
    y= 3sin [2Pi/365 (x-79)] +12

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    Solution Summary

    Sunlight equation is exemplified.