The TAN function is a Math and Trigonometry function, and its purpose is to return a tangent of a number or angle. In this post, we show you how to use the TAN function in Microsoft Excel.

By default, references in Excel use the A1 reference style, which means that it refers to the column first, and then the row number. However, the INDIRECT function enables you to switch these around.

On Monday, the company announced that its Copilot AI is now available as an Excel function for Microsoft 365 insiders. That means you can add COPILOT to a formula and then use natural language in a ...

Formulas are powerful tools for performing calculations and analyzing data in Excel. In this beginner’s guide, you’ll learn how to use formulas and explore some popular built-in functions.

Excel has a versatile If, Then function built right into it. We’ll show you how to use the IF function in Excel with a number of helpful examples.

The lookup function in Excel can save you a lot of time and effort, but only if you actually know how to use its many forms and alterations.

This month’s column shows how to use the remarkably versatile AGGREGATE function in Excel.

The PI function is a Math & Trigonometry Function. Learn how to use the PI function in Excel, or how to multiply by PI, using this tutorial.