x,y的参数方程为x=R*cos(A)y=R*sin(A)设旋转B度,则x=R*cos(A+B)=R*[cos(A)*cos(B)-sin(A)sin(B)]y=R*sin(A+B)=R*[sin(A)cos(B)+cos(A)sin(B)]所以用矩阵来表示上述转化过程则是：| x y | *| cos(B) sin(B) || -sin(B...