The distance from the foci of `P (a, b)` on the ellipse `x^2/9+y^2/25=1` are

The foci of the ellipse (x^(2))/(4) +(y^(2))/(25) = 1 are :

the distance between the foci of the ellipse 5x^(2)+9y^(2)=45, is

The product of the perpendiculars from the two foci of the ellipse (x^(2))/(9)+(y^(2))/(25)=1 on the tangent at any point on the ellipse

Tangents are drawn from the point P(3,4) to the ellipse (x^(2))/(9)+(y^(2))/(4)=1 touching the ellipse at points A and B.