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. With this fourpart installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to find the optimal angle at which to launch a projectile.
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How To: Remember "greater than" & "less than" symbols

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Calculate Faster Than a Calculator

How To: Find the 100th term in a sequence

How To: Find the Radius of a Circle from Arc Length

How To: Find and sketch the domain of a multivariable function

How To: Find the Percent Given Two Numbers

How To: Calculate the area of a parallelogram

How To: Identify characteristics of a sample during a survey

How To: Find the formula of a piecewise function given a graph

How To: Solve percentages without a calculator

How To: Determine the eigenvalues of a 3x3 matrix

How To: Divide fractions by multiplying by the reciprocal

How To: Find a slope of a straight line with: Ax + By + C = 0

How To: Find extra points for a parabola (quadractic equation)

How To: Convert Fahrenheit to Celsius with a formula

How To: Find the area of a circle when you know the diameter

How To: Find the standard deviation with the ZScore formula

How To: Calculate the height and volume of a pyramid

How To: Find a missing angle outside of a triangle

How To: Remember "greater than" & "less than" symbols

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Calculate Faster Than a Calculator

How To: Find the 100th term in a sequence

How To: Find the Radius of a Circle from Arc Length

How To: Find and sketch the domain of a multivariable function

How To: Find the Percent Given Two Numbers

How To: Calculate the area of a parallelogram

How To: Identify characteristics of a sample during a survey

How To: Find the formula of a piecewise function given a graph

How To: Solve percentages without a calculator

How To: Determine the eigenvalues of a 3x3 matrix

How To: Divide fractions by multiplying by the reciprocal

How To: Find a slope of a straight line with: Ax + By + C = 0

How To: Find extra points for a parabola (quadractic equation)

How To: Convert Fahrenheit to Celsius with a formula

How To: Find the area of a circle when you know the diameter

How To: Find the standard deviation with the ZScore formula

How To: Calculate the height and volume of a pyramid

How To: Find a missing angle outside of a triangle
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