How To: Simplify and rewrite the complex number "i"

The powers of the complex number "i" run their course in a cyclical nature, like annual seasons of "American Idol." Simplify your life - or at least your math class life - by learning how to rewrite the powers of "i" into simple, single variable expressions.

This video guides you through all you'll ever need to know about "i." Watch it now to see how you can even figure out what "i" to the 20th power equals without calculation.