[" The locus of the point "(h,k)" for which the line "hx+ky=1" touches the circle "x^(2)+],[y^(2)=4" is "]

The locus of the point P(h, k) for which the line hx+ky=1 touches the circle x^(2)+y^(2)=4 , is

The locus of the point P(h, k) for which the line hx+ky=1 touches the circle x^(2)+y^(2)=4 , is

The locus of the point (l,m) if the line lx+my=1 touches the circles x^(2)+y^(2)=a^(2) is

The locus of th point (l,m). If the line lx+my=1 touches the circle x^(2)+y^(2)=a^(2) is

The locus of th point (l,m). If the line lx+my=1 touches the circle x^(2)+y^(2)=a^(2) is

Find k , if the line y = 2x + k touches the circle x^(2) + y^(2) - 4x - 2y =0

" The eccentricity of locus of point " (3h+2,k) " where " (h,k) " lies on the circle " x^(2)+y^(2)=1 " is."