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.

In Microsoft Excel, the SIGN number is a math and trigonometry function that returns the sign of a number. Learn how to use it.

How to Use Trig Functions in Excel. Excel has built-in functions for sine and cosine, the two core trigonometric functions, and for hyperbolic sine and hyperbolic cosine, their hyperbolic ...

Unfortunately, if you're using Excel 2019 or earlier, you won't be able to create your own functions using the methods described in this guide.

Generally, you can use the greater than, less than and equal signs you may remember from math class. If you want to check if two values are not equal, use the special Excel not equal notation ...