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trigonometric identity

noun

trigonometric identity

noun
1

Mathematics, Sciences, Trigonometry A trigonometric equation that is true for all values of the input variable for which both sides of the equation are defined.

  • The trigonometric identity sin(2x) = 2sin(x)cos(x).
Derived terms
Pythagorean trigonometric identity

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.