Appreciating that all trigonometric functions are continuous over their domains. Because of that, a limit to a point in a trig function’s domain will be the value of the function at that point.
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AP Calculus AB on Khan Academy: Bill Scott uses Khan Academy to teach AP Calculus at Phillips Academy in Andover, Massachusetts, and heÕs part of the teaching team that helped develop Khan AcademyÕs AP lessons. Phillips Academy was one of the first schools to teach AP nearly 60 years ago.
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