Dictionary

arccosine

noun arc·co·sine \(ˌ)är(k)-ˈkō-ˌsīn\

Definition of ARCCOSINE

:  the inverse function of the cosine <if y is the cosine of θ, then θ is the arccosine of y>

First Known Use of ARCCOSINE

circa 1884

Browse

Next Word in the Dictionary: arccotPrevious Word in the Dictionary: arc cosecantAll Words Near: arccosine
July 03, 2015
interpellate Hear it
to formally question a public official
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears