- trigonometric identity
- noun
: an identity involving or based on trigonometric functions
Useful english dictionary. 2012.
trigonometric identity
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Pythagorean trigonometric identity — The Pythagorean trigonometric identity is a trigonometric identity expressing the Pythagorean theorem in terms of trigonometric functions. Along with the sum of angles formulae (see Angle sum and difference identities) it is the basic relation… … Wikipedia
Identity (mathematics) — For other uses, see Identity (disambiguation). In mathematics, the term identity has several different important meanings: An identity is a relation which is tautologically true. This means that whatever the number or value may be, the answer… … Wikipedia
trigonometric function — Math. 1. Also called circular function. a function of an angle, as sine or cosine, expressed as the ratio of the sides of a right triangle. 2. any function involving only trigonometric functions and constants. 3. the generalization of these to… … Universalium
Trigonometric functions — Cosine redirects here. For the similarity measure, see Cosine similarity. Trigonometry History Usage Functions Generalized Inverse functions … Wikipedia
identity — /aɪˈdɛntəti / (say uy dentuhtee) noun (plural identities) 1. the state or fact of remaining the same one, as under varying aspects or conditions. 2. the condition of being oneself or itself, and not another: he doubted his own identity. 3. an odd …
List of trigonometric identities — Cosines and sines around the unit circle … Wikipedia
Exact trigonometric constants — Exact constant expressions for trigonometric expressions are sometimes useful, mainly for simplifying solutions into radical forms which allow further simplification.All values of sine, cosine, and tangent of angles with 3° increments are… … Wikipedia
Proofs of trigonometric identities — are used to show relations between trigonometric functions. This article will list trigonometric identities and prove them.Elementary trigonometric identitiesDefinitionsReferring to the diagram at the right, the six trigonometric functions of… … Wikipedia
Differentiation of trigonometric functions — Trigonometry History Usage Functions Generalized Inverse functions Further reading … Wikipedia
Euler's identity — [ 300px|thumb|right|The exponential function e z can be defined as the limit of nowrap|(1 + z / N ) N , as N approaches infinity, and thus e iπ is the limit of nowrap|(1 + iπ/N ) N . In this animation N takes various increasing values from 1 to… … Wikipedia
