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versed sine

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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
Based on the Random House Dictionary, © Random House, Inc. 2009.
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versed sine  
n.   Abbr. vers
A trigonometric function of an angle equal to one minus the cosine of that angle. Also called versine.

[Translation of New Latin sinus versus : sinus, sine + Latin versus, past participle of vertere, to turn.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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