# trigonometric identity

> English word · Noun

## Definitions
1. A trigonometric equation that is true for all values of the input variable for which both sides of the equation are defined.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/trigonometric-identity