Pronunciation: /ˌtrɪg.ə.nəˈmɛ.trɪk aɪˈdɛn.tə.tiz/ Explain
A trigonometric identity is a trigonometric equation
that is always true. Trigonometric identities are used to solve problems involving
trigonometric functions. They are particularly useful for calculus.
The common trigonometric identities are:
Even Odd Identities
Sum Difference Identities
Double Angle Identities
Half Angle Identities
Sum to Product Identities
Product to Sum Identities
|Table 1: Trigonometric identities|
- McAdams, David E.. All Math Words Dictionary, trigonometric identities. 2nd Classroom edition 20150108-4799968. pg 182. Life is a Story Problem LLC. January 8, 2015. Buy the book
- McAdams, David E.. Trigonometric Identities. allmathwords.org. All Math Words Encyclopedia. Life is a Story Problem LLC. 12/16/2018. http://www.allmathwords.org/docs/TrigonometricIdentities.pdf.
Cite this article as:
McAdams, David E. Trigonometric Identities. 4/3/2019. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/t/trigonometricidentities.html.
4/3/2019: Removed broken links. (McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
12/16/2018: Removed broken links, updated license, implemented new markup. (McAdams, David E.)
1/3/2011: Added external links to derivation of Pythagorean identities and cofunction identities. (McAdams, David E.)
7/1/2008: Initial version. (McAdams, David E.)