If the tangents from the point `(lambda, 3)` to the ellipse `x^2/9+y^2/4=1` are at right angles then `lambda` is

If the tangents drawn through the point (1, 2 sqrt(3) to the ellipse x^2/9 + y^2/b^2 = 1 are at right angles, then the value of b is (A) 1 (B) -1 (C) 2 (D) 4

If the tangents drawn through the point (1, 2 sqrt(3) to the ellipse x^2/9 + y^2/b^2 = 1 are at right angles, then the value of b is (A) 1 (B) -1 (C) 2 (D) 4

If the tangents drawn from a point (1,2 sqrt(3)) to the ellipse (x^(2))/(9)+(y^(2))/(b^(2))=1 are at right angles then b =

Find the equations of the tangents from the point (2,2) to the ellipse 4x^(2)+9y^(2)=36 . Also find the angle between the tangents.

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

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.

Find the equation of the locus of a point, the tangents from which to the ellipse 3x^2+5y^2=15 are at right angles.

The angle between the tangents drawn from the point (1,2) to the ellipse 3x^(2) + 2y^(2) - 5 is