41 2TIX ,where x is the number of days after March The daily number of hours of daylight in Cullowhee, NC can be given by h = + sin- 365 4 21(disregarding leap year). On what day or days will there be approximately 10 hours of daylight?

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Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.