MAINT: Use trig identity to evaluate cosm1.
MAINT: Use trig identity to evaluate cosm1.

pdebuyl/numpy,grlee77/numpy,WarrenWeckesser/numpy,jakirkham/numpy,simongibbons/numpy,endolith/numpy,pdebuyl/numpy,charris/numpy,simongibbons/numpy,anntzer/numpy,pbrod/numpy,madphysicist/numpy,rgommers/numpy,simongibbons/numpy,WarrenWeckesser/numpy,mhvk/numpy,charris/numpy,rgommers/numpy,pdebuyl/numpy,madphysicist/numpy,abalkin/numpy,WarrenWeckesser/numpy,anntzer/numpy,madphysicist/numpy,jakirkham/numpy,madphysicist/numpy,rgommers/numpy,madphysicist/numpy,mhvk/numpy,seberg/numpy,grlee77/numpy,pdebuyl/numpy,mattip/numpy,mattip/numpy,pbrod/numpy,mhvk/numpy,pbrod/numpy,numpy/numpy,seberg/numpy,numpy/numpy,numpy/numpy,anntzer/numpy,mattip/numpy,mattip/numpy,endolith/numpy,seberg/numpy,simongibbons/numpy,endolith/numpy,jakirkham/numpy,abalkin/numpy,mhvk/numpy,pbrod/numpy,charris/numpy,charris/numpy,WarrenWeckesser/numpy,jakirkham/numpy,endolith/numpy,simongibbons/numpy,mhvk/numpy,grlee77/numpy,grlee77/numpy,jakirkham/numpy,abalkin/numpy,pbrod/numpy,grlee77/numpy,seberg/numpy,anntzer/numpy,WarrenWeckesser/numpy,numpy/numpy,rgommers/numpy