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OpenStudy (anonymous):
What is the sine value of 2 pi over 3?
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OpenStudy (anonymous):
the sin value is radical 3 over 2.
OpenStudy (anonymous):
sin deals with the y value and 2π/3 is 120 degrees. at 120 degrees the coordinate is (-1/2, rad 3/2) so the y value is your sin value
OpenStudy (anonymous):
The life expectancy of a typical lightbulb is normally distributed with a mean of 2,000 hours and a standard deviation of 27 hours. What is the probability that a lightbulb will last between 1,975 and 2,050 hours? 0.17619 0.32381 0.79165 0.96784
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