怎么解方程cos(x)+sin(x)=0
问题描述:
怎么解方程cos(x)+sin(x)=0
答
cos(x)=-sin(x),1=-sin(x)/cos(x)=-tan(x)=1.x=-3/2∏+360°x=-3/2∏+2∏x=-3/2∏+2k∏,k为整数
怎么解方程cos(x)+sin(x)=0
cos(x)=-sin(x),1=-sin(x)/cos(x)=-tan(x)=1.x=-3/2∏+360°x=-3/2∏+2∏x=-3/2∏+2k∏,k为整数