If `C` is the center of the ellipse `9x^2+16 y^2=144` and `S` is a focus, then find the ratio of `C S` to the semi-major axis.

If C is the centre of the ellipse 9x^(2) + 16y^(2) = 144 and S is one focus. The ratio of CS to major axis, is

C is the centre of the ellipse (x^(2))/(25)+(y^(2))/(16)=1 and S is one of the foci.The ratio of CS to semi major axis is

Write the eccentricity of the hyperbola 9x^(2)-16y^(2)=144

The equation of the parabola whose vertex is at the centre of the ellipse x^2/25+y^2/16 = 1 and the focus coincide with the focus of the ellipse on the positive side of the major axis of the ellipse is

The equations of tangents to the ellipse 9x^(2)+16y^(2)=144 from the point (2,3) are:

The equations of tangents to the ellipse 9x^(2)+16y^(2)=144 from the point (2,3) are:

If the line y=x+k touches the ellipse 9x^(2)+16y^(2)=144 ,then the absolute difference of the values of k is

A point on the ellipse x^(2)/16 + y^(2)/9 = 1 at a distance equal to the mean of lengths of the semi - major and semi-minor axis from the centre, is