Find the distance between the directrices of the ellipse `(x^2)/(36) + (y^2)/(20) =1`.

The distance between the directrices of the ellipse x^2/4+y^2/9=1 is:

The maximum distance of the centre of the ellipse (x^(2))/(16) +(y^(2))/(9) =1 from the chord of contact of mutually perpendicular tangents of the ellipse is

Find the lengths of the major and minor axes, the co-ordinates of the foci, the vertices, the eccentricity, length of latus-rectum and equations of the directrices of the following ellipse : x^2/36 +y^2/16=1 .

Find the lengths of the major and minor axes, the co-ordinates of the foci, the vertices, the eccentricity, length of latus-rectum and equations of the directrices of the following ellipse : x^2/16 +y^2/9 =1 .

Find the distance between the line and the point of the following : 12(x+6)=5 (y-2),(-1,1) .

Find the lengths of the major and minor axes, co-ordinates of the foci, vertices, the eccentricity and equations of the directrices for the ellipse 9x^2+ 16y^2 = 144 .

Find the lengths of the major and minor axes, the co-ordinates of the foci, the vertices, the eccentricity, length of latus-rectum and equations of the directrices of the following ellipse : x^2/4 +y^2/25=1 .

Find the lengths of the major and minor axes, the co-ordinates of the foci, the vertices, the eccentricity, length of latus-rectum and equations of the directrices of the following ellipse : x^2/25 +y^2/100 =1 .

Find the lengths of the major and minor axes, the co-ordinates of the foci, the vertices, the eccentricity, length of latus-rectum and equations of the directrices of the following ellipse : x^2/100 +y^2/400 =1 .