(1)曲线C 1的直角坐标方程为x 2+(y-6) 2=36.C 2的直角坐标方程为(x-3
) 2+(y-3) 2=36(2)18
(1)因为ρ=12sinθ,所以ρ 2=12ρsinθ,所以x 2+y 2-12y=0,即曲线C 1的直角坐标方程为x 2+(y-6) 2=36.又ρ=12cos
,所以ρ 2=12ρ
,所以x 2+y 2-6
x-6y=0,即曲线C 2的直角坐标方程为(x-3
) 2+(y-3) 2=36.
(2)PQ max=6+6+
=18
(1)曲线C 1的直角坐标方程为x 2+(y-6) 2=36.C 2的直角坐标方程为(x-3
) 2+(y-3) 2=36(2)18
(1)因为ρ=12sinθ,所以ρ 2=12ρsinθ,所以x 2+y 2-12y=0,即曲线C 1的直角坐标方程为x 2+(y-6) 2=36.又ρ=12cos
,所以ρ 2=12ρ
,所以x 2+y 2-6
x-6y=0,即曲线C 2的直角坐标方程为(x-3
) 2+(y-3) 2=36.
(2)PQ max=6+6+
=18