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Mathematics 24 Online
OpenStudy (anonymous):

The number of hours of daylight in North Reindeer Falls can be modeled by the sinusoidal function H(d)= -7cos(2pi/365(d+10))+12.4, where d is the day of the year and d=0 is January 1. What is the fewest number of hours of daylight experienced by this northern village?

OpenStudy (anonymous):

A) 12.4 B) 5.6 C) 8.2 D) 5.4

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