AP Physics 1 on Khan Academy: Meet one of our writers for AP¨_ Physics, Sean. A physics teacher for seven years, Sean has taught AP¨_ Physics 1, AP¨_ Physics C, and Conceptual Physics. HeÕs also a former mechanical engineer. Sean is based in Boise, Idaho, and is a Khan Academy physics fellow, creating awesome new exercises and articles for AP¨_ Physics.

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Cue presidential music: “Hello, my fellow YayMathers. It is indeed my great and honored pleasure, to teach you how to solve triangles using the Law of Cosines, from right within the Oval Office. It’s a great follow up from our epic lesson on the Law of Sines. These topics are not only useful within Trigonometry,…

http://www.freemathvideos.com In this video playlist you will learn how to solve a system of equations or inequalities by algebraic methods such as substitution and elimination and graphing. We will then finish the unit by exploring how to optimize an objective functions in Linear Programming. A system of equations can have three different types of solutions,…

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