Historic Shorthands
The versine, coversine, haversine, and exsecant were used in navigation. For example the haversine formula was used to calculate the distance between two points on a sphere. They are rarely used today.
| Name(s) | Abbreviation(s) | Value |
|---|---|---|
| versed sine, versine | ||
| versed cosine, vercosine | ||
| coversed sine, coversine | ||
| coversed cosine, covercosine | ||
| half versed sine, haversine | ||
| half versed cosine, havercosine | ||
| half coversed sine, hacoversine cohaversine |
||
| half coversed cosine, hacovercosine cohavercosine |
||
| exterior secant, exsecant | ||
| exterior cosecant, excosecant | ||
| chord |
Read more about this topic: List Of Trigonometric Identities
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“The first farmer was the first man, and all historic nobility rests on possession and use of land.”
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