Tangents are drawn from external poinl `P(6,8)` to the circle `x^2+y^2 =r^2` find the radius r of the circle such that area of triangle formed by the tangents and chord of contact is maximum is (A) 25 (B) 15 (C) 5 (D) none

The area of triangle formed by tangents and the chord of contact from (3,4) to y^(2)=2x is

Two tangents are drawn from the point ((25)/(3),0) to the ellipse (x^(2))/(25)+(y^(2))/(16)=1 if area of the triangle formed by the tangents with the chord of contact is equal to A then find the value of A.

Tangents are drawn from the point (-1,2) to the parabola y^(2)=4x The area of the triangle for tangents and their chord of contact is

If the pair of tangents are drawn from the point (4,5) to the circle x^(2)+y^(2)-4x-2y-11=0 , then (i) Find the length of chord of contact. (ii) Find the area of the triangle fromed by a pair of tangents and their chord of contact. (iii) Find the angle between the pair of tangents.

Tangents drawn from P(6,8) to a circle x^(2)+y^(2)=r^(2) forms a triangle of maximum area with chord of contact,then r=

Tangents are drawn from (-2,0) to y^(2)=8x then the radius of the circle that would touch these tangents and the corresponding chord of contact can be

Tangents are drawn from the point (4,3) to circle x^(2)+y^(2)=9. The area of the triangle forme by them and the line joining their point of contact is