[" 61.The locus of the point "(l,m)" so that "kx+my],[=1" touches the circle "x^(2)+y^(2)=a^(2)" 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

The locus of the point (l, m) so that lx+my=1 touches the circle x^(2)+y^(2)=a^(2) is :a) x^(2)+y^(2)-ax=0 b) x^(2)+y^(2)=1/a^(2) c) y^(2)=4ax d) x^(2)+y^(2)-ax-ay+a^(2)=0

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

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 centre of the circle which moves such that it touches the circle (x + 1)^(2) + y^(2) = 1 externally and also the y-axis is