In this video, I will show you how to evaluate an angle in degrees using the sum formula of cosine. We will need to use the ...

TeX is a typesetting standard that, among other things, allows you to typeset complex math formulas. One flavor of Tex is LaTeX, for which LaTeXiT serves as a front-end for on Mac OS X. Using LaTeXiT, ...

Divide any circle’s circumference by its diameter and you get pi. But what, exactly, are its digits? Measuring physical ...

I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those ...