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 ...

Math Notes understands the full set of trigonometry functions too, so you can use "sin," "cos," and "tan" in your expressions as well.

Choose the "Math & Trig" category to open the corresponding function options and select the TAN option from the function drop-down list.

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