Definitions
from The Century Dictionary.
- noun Same as
versed sine . Seesine .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun trigonometry The
versed sine .
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[Contraction of versed sine.]
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Examples
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Since the square of the sine pops up in trig very frequently, it was useful to have tables of the versine pre-computed in a book.
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Just like sine and cosine are shifted from each other, the coversine is just the versine shifted.
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[Footnote 125: Formerly noticed as a species of velvet; but the words marsine and versine were inexplicable in the days of Hakluyt, and must so remain.
A General History and Collection of Voyages and Travels — Volume 07 Robert Kerr 1784
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The versine is 1 minus the cosine; the haversine is half of the versine.
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