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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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https://brainmass.com/math/trigonometry/sunlight-equation-437197

#### Solution Summary

Sunlight equation is exemplified.

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