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

Looking for an easy way to remember the unit circle or just use it to evaluate trigonometric functions. If you are in a pinch ...

For novices, functions are one of the most intimidating features of OpenOffice.org's Calc. Newcomers quickly learn that functions are a main feature of spreadsheets, but there are almost four hundred, ...

Excel has over 475 formulas in its Functions Library, from simple mathematics to very complex statistical, logical, and engineering tasks such as IF statements (one of our perennial favorite stories); ...