what is the period for y=cosx
- Properties and Graph of the Function y=cos(x) Properties are following: Domain is all number line. Range is segment [â1,1]. Function is periodic with main period 2Ï. Function is even. Function is decreasing on intervals [2Ïn,Ï+2Ïn] and increasing on intervals [âÏ+2Ïn,2Ïn],nâZ.