| 释义 |
haversine Trig.|ˈhævəsaɪn|
[Abbreviation of ha(lf) versine (versed sine).]
In nautical phraseology: Half the versed sine. (Introduced by Prof. Jas. Inman, D.D., in his Navigation and Nautical Astronomy ed. 3, 1835. Cf. Dict. Nat. Biog.)
1875Bedford Sailor's Pocket Bk. x. (ed. 2) 381 Add together the log. secants of the two first terms..and the half haversines of the two last. |