Add rewrite(cos) to spherical harmonics
Add rewrite(cos) to spherical harmonics

farhaanbukhsh/sympy,hargup/sympy,Gadal/sympy,abloomston/sympy,vipulroxx/sympy,ChristinaZografou/sympy,abloomston/sympy,yashsharan/sympy,sahilshekhawat/sympy,jbbskinny/sympy,kmacinnis/sympy,Vishluck/sympy,beni55/sympy,AkademieOlympia/sympy,Titan-C/sympy,skidzo/sympy,shipci/sympy,shikil/sympy,diofant/diofant,bukzor/sympy,skidzo/sympy,wanglongqi/sympy,sunny94/temp,aktech/sympy,iamutkarshtiwari/sympy,liangjiaxing/sympy,debugger22/sympy,jerli/sympy,souravsingh/sympy,Sumith1896/sympy,oliverlee/sympy,lidavidm/sympy,rahuldan/sympy,cccfran/sympy,vipulroxx/sympy,aktech/sympy,aktech/sympy,kaichogami/sympy,grevutiu-gabriel/sympy,shipci/sympy,lindsayad/sympy,bukzor/sympy,grevutiu-gabriel/sympy,MechCoder/sympy,skirpichev/omg,ga7g08/sympy,iamutkarshtiwari/sympy,kaushik94/sympy,Vishluck/sympy,cccfran/sympy,cccfran/sympy,liangjiaxing/sympy,emon10005/sympy,meghana1995/sympy,sampadsaha5/sympy,Designist/sympy,farhaanbukhsh/sympy,yashsharan/sympy,jerli/sympy,yukoba/sympy,sahilshekhawat/sympy,Davidjohnwilson/sympy,kaichogami/sympy,yukoba/sympy,jbbskinny/sympy,emon10005/sympy,wanglongqi/sympy,Mitchkoens/sympy,cswiercz/sympy,wyom/sympy,ChristinaZografou/sympy,mafiya69/sympy,mcdaniel67/sympy,pbrady/sympy,moble/sympy,madan96/sympy,kumarkrishna/sympy,toolforger/sympy,kmacinnis/sympy,mafiya69/sympy,hrashk/sympy,abhiii5459/sympy,liangjiaxing/sympy,jaimahajan1997/sympy,yukoba/sympy,lindsayad/sympy,asm666/sympy,Curious72/sympy,AunShiLord/sympy,postvakje/sympy,sampadsaha5/sympy,pandeyadarsh/sympy,maniteja123/sympy,drufat/sympy,atreyv/sympy,pandeyadarsh/sympy,Designist/sympy,meghana1995/sympy,ga7g08/sympy,Davidjohnwilson/sympy,MechCoder/sympy,VaibhavAgarwalVA/sympy,skidzo/sympy,hrashk/sympy,jaimahajan1997/sympy,mafiya69/sympy,saurabhjn76/sympy,sampadsaha5/sympy,MridulS/sympy,Arafatk/sympy,maniteja123/sympy,emon10005/sympy,pbrady/sympy,moble/sympy,sunny94/temp,cswiercz/sympy,debugger22/sympy,garvitr/sympy,beni55/sympy,garvitr/sympy,shikil/sympy,lidavidm/sympy,bukzor/sympy,Titan-C/sympy,abhiii5459/sympy,Sumith1896/sympy,sahmed95/sympy,Designist/sympy,kevalds51/sympy,abhiii5459/sympy,VaibhavAgarwalVA/sympy,sahilshekhawat/sympy,kevalds51/sympy,drufat/sympy,meghana1995/sympy,shikil/sympy,rahuldan/sympy,Sumith1896/sympy,oliverlee/sympy,postvakje/sympy,drufat/sympy,shipci/sympy,dqnykamp/sympy,kmacinnis/sympy,atsao72/sympy,postvakje/sympy,Gadal/sympy,ahhda/sympy,mcdaniel67/sympy,kumarkrishna/sympy,souravsingh/sympy,Arafatk/sympy,jerli/sympy,Vishluck/sympy,chaffra/sympy,chaffra/sympy,iamutkarshtiwari/sympy,atsao72/sympy,jamesblunt/sympy,kaichogami/sympy,Curious72/sympy,saurabhjn76/sympy,AunShiLord/sympy,farhaanbukhsh/sympy,cswiercz/sympy,sahmed95/sympy,Mitchkoens/sympy,atreyv/sympy,ahhda/sympy,kaushik94/sympy,garvitr/sympy,Curious72/sympy,Davidjohnwilson/sympy,MridulS/sympy,dqnykamp/sympy,dqnykamp/sympy,kumarkrishna/sympy,ahhda/sympy,AkademieOlympia/sympy,vipulroxx/sympy,Arafatk/sympy,kaushik94/sympy,asm666/sympy,yashsharan/sympy,Shaswat27/sympy,souravsingh/sympy,toolforger/sympy,VaibhavAgarwalVA/sympy,toolforger/sympy,Shaswat27/sympy,saurabhjn76/sympy,rahuldan/sympy,hargup/sympy,atsao72/sympy,Titan-C/sympy,Shaswat27/sympy,madan96/sympy,grevutiu-gabriel/sympy,jbbskinny/sympy,madan96/sympy,jamesblunt/sympy,lidavidm/sympy,MechCoder/sympy,mcdaniel67/sympy,wyom/sympy,lindsayad/sympy,pandeyadarsh/sympy,Mitchkoens/sympy,maniteja123/sympy,kevalds51/sympy,asm666/sympy,sunny94/temp,pbrady/sympy,wyom/sympy,AunShiLord/sympy,wanglongqi/sympy,ga7g08/sympy,oliverlee/sympy,chaffra/sympy,abloomston/sympy,jaimahajan1997/sympy,ChristinaZografou/sympy,Gadal/sympy,sahmed95/sympy,debugger22/sympy,jamesblunt/sympy,beni55/sympy,atreyv/sympy,moble/sympy,MridulS/sympy,AkademieOlympia/sympy,hargup/sympy,hrashk/sympy