函数的定义域为R,关于原点对称令f(x)=cos(x+60°)=cosxcos60°-sinxsin60°且f(-x)=cos(-x+60°)=cos(-x)cos60°-sin(-x)sin60°=cosxcos60°+sinxsin60°f(x)≠f(-x)f(x)≠-f(-x)所以f(x)=cos(x+60°)为非奇非偶函...