ρ=2sinθ+2cosθρ²=2ρsinθ+2ρcosθx²+y²=2y+2x(x-1)²+(y-1)²=2圆心是(1,1),半径是√2x=-3t y=-4t4x=3y4x-3y=0圆心到直线的距离=|4*1-3-1|/√(4²+3²)=1/5而直线经过圆∴c上...