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coversed sine

[koh-vurst] /ˈkoʊ vɜrst/
noun, Mathematics
the versed sine of the complement of an angle or arc.
Also called coversine [koh-ver-sahyn, koh-vur-sahyn] /ˈkoʊ vərˌsaɪn, koʊˈvɜr saɪn/ (Show IPA), versed cosine.
Origin of coversed sine
1700-10 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for versed co-sine

coversed sine

noun (obsolete)
a trigonometric function equal to one minus the sine of the specified angle covers
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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