If the distance between the parallel tangents to the ellipse `x^2/4+y^2/1=1` is 3 units then the slope is

If the distance between two parallel tangents drawn to the hyperbola x^2/9-y^2/49 =1 is 2, then their slope is equal to

The distance between the focii of the ellipse 3x^2+4y^2=1 is _____.

If the distances between two parallel tangents drawn to the hyperbola (x^(2))/(9) -(y^(2))/( 49) = 1 is 2 , then their slope is equal to

The distance between the tangents to the hyperbola (x^2)/(20) -(3y^2)/4=1 which are parallel to the line x+3y =7 is

If d is the distance between the parallel tangents with positive slope to y^2=4x and x^2+y^2−2x+4y−11=0,

Angle between the tangents drawn from point (4, 5) to the ellipse x^2/16 +y^2/25 =1 is