Mathematics students have cause to celebrate. A University of New South Wales academic, Dr Norman Wildberger, has rewritten the arcane rules of trigonometry and eliminated sines, cosines and tangents ...

Trigonometric identities are powerful tools for simplifying complex equations in math and science. Three core groups—reciprocal, quotient, and Pythagorean—form the foundation. Effective strategies ...

This is an updated version of a story first published on May 5, 2024. For many high school students returning to class, it may seem like geometry and trigonometry were created by the Greeks as a form ...

I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips.

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

In Microsoft Excel, a FACT or FACTDOUBLE function are both a Math and Trigonometry function. Math and Trigonometry functions in Excel perform mathematical calculations, including basic arithmetic, ...