Word Equation for Pre Calc
The sun iluminates half of the moon's surface, except during a lunar eclipse. The illuminated portion of the moon visible from Earth varies as t revolves around Earth resulting in the phases of the moon. The period from a full moon to a new moon and back o a full moon is called a synodic month and is 29 days, 12 hours, and 44.05 minutes long. Write a sine function that models the fraction of the moon's surface which is seen to be illuminated during a synodic month as a function of the number of days, d, after a full moon. (Note: full moon equals 1/2 illuminated.) SHOW WORK!
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