Need help solving problems involving 45°45°90° right triangles? You're in luck. From Ramanujan to calculus cocreator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with 45°45°90° right triangles.
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How To: Remember "greater than" & "less than" symbols

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How To: Write a slopeintercept equation given an XY table

How To: Do long division without a calculator

How To: Find the Percent Given Two Numbers

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How To: Find a missing coordinate given: coordinate & equation

How To: Find the area of a parallelogram using geometry

How To: Write a logarithm as a sum or difference of logarithms

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How To: Find the coordinate of a point

How To: Find the length of a segment using the midpoint II

How To: Find the length of a median in a trapezoid
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