coversed sine

[ koh-vurst ]
/ ˈkoʊ vɜrst /

noun Mathematics.

the versed sine of the complement of an angle or arc.
Also called co·ver·sine [koh-ver-sahyn, koh-vur-sahyn] /ˈkoʊ vərˌsaɪn, koʊˈvɜr saɪn/. versed cosine.

Origin of coversed sine

First recorded in 1700–10

British Dictionary definitions for coversed sine

coversed sine
/ (ˈkəʊvɜːst) /

noun obsolete

a trigonometric function equal to one minus the sine of the specified angle Abbreviation: covers