Surprising Uses of the Pythagorean Theorem

The Pythagorean theorem is a celebrity: if an equation can make it into the Simpsons, I'd say its well-known.
But most of us think the formula only applies to triangles and geometry. Think again. The Pythagorean Theorem can be used with any shape and for any formula that squares a number.
Read on to see how this ...Another Look at Prime Numbers
Demystifying the Natural Logarithm (ln)
An Intuitive (and Short) Explanation of Bayes’ Theorem
An Intuitive Guide To Exponential Functions & E
Understanding the Birthday Paradox
Vector Calculus: Understanding Circulation and Curl
Vector Calculus: Understanding the Gradient
Techniques for adding the numbers 1 to 100
Easy Permutations and Combinations
The Rule of 72
Mental Math Shortcuts
Types of Graphs
Crowd Favorites
Math & Numbers
- Mental math shortcuts, adding 1-100
- Understanding exponents and the natural log
- Div, Curl, Flux, Gradient and other Vector Calculus topics
Programming & Web Development
- Site speedups with HTTP caching, gzip compression
- Understanding Rails, Web debugging, and Javascrtipt
- Swap bytes with XOR, byte order, unicode
