Question

曲线c1:x=-4+cost、y=3+sint(t为参数)、曲线c2:x=8cosα、y=3sinα（α为参数）化c1、

Answer 1

C1:(x+4)^2+(y-3)^2=1

C2:(x/8)^2+(y/3)^2=1 x^2/64+y^2/9=1