[Prime] Missing trigonometric/hyperbolic functions, possible navigational enhancement

[Dwight Sturrock]

Versed sine aka versine: VSIN (or VERS)
versed cosine aka vercosine: VCOS (or VERC)
coversed sine aka coversine: CVSIN (or CVS)
coversed cosine aka covercosine: CVCOS (or CVC or CVCS)
haversed sine aka haversine aka semiversus: HVSIN (or HAV, HVS, SEM)
haversed cosine aka havercosine: HVCOS (or HVCS, HVC)
hacoversed sine aka hacoversine: HCVSIN (or HCVS)
hacoversed cosine aka hacovercosine : HCVCOS (or HCVC, HCVCS)
chord: CRD
exsecant: EXSEC (or XSEC)
excosecant: EXCSC (or XCSC)

Interesting & apparently archaic. Are there common modern uses for these functions?