versin

versed sine

noun Trigonometry.
one minus the cosine of a given angle or arc. Abbreviation: vers.
Also called versine, versin.


Origin:
1590–1600

Dictionary.com Unabridged

versine

[vur-sahyn]
noun Trigonometry.
Also, versin.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
versed sine
 
n
vers a trigonometric function equal to one minus the cosine of the specified angle
 
[C16: from New Latin sinus versus, from sine1 + versus turned, from vertere to turn]

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