https://www.qnx.com/developers/docs/8.0/com.qnx.doc.neutrino.lib_ref/topic/c/cos.html
Compute the cosine of an angle
cos
https://www.offshore-energy.biz/cosl-rig-spuds-last-well-on-its-north-sea-list-with-serica/
Serica Energy is bringing its multi-well drilling campaign and work-over program in the North Sea to an end.
north seacoslrigspudslast