Circles of radii 3,4,5 touch each other externally . Let P be the point of intersection of tangents of these circles at their points of contact .Show that the distance of P from a point of contact is `sqrt5`.

Circles with radii 3,4,5 are touching each other externally . If P is the point of intersection of tangents to these circles at their points of contact, the distance of P from the point of contact is

Circles with radii 3,4,5 are touching each other externally , If P is the point of intersection of tangents to these circles at their point of contact ,the distances of P from the points of contact is

Two circles of radii 7 cm and 4 cm touch each other externally. Then the distance between their centres.

Two circles of radii 5 cm and 3 cm touch each other internally. Then the distance between their centres.

The circles having radii 1,2,3 touch each other externally then find the radius of the circle which cuts the three circles orthogonally.

Three circles touch each other externally. The tangents at their points of contact meet at a point whose distance from a point of contact is 4. Show that the ratio of the product of the radii of the sum of the radii of the circles is 16.

Show that the points of intersection of the perpendicular tangents to an ellipse lies on a circle.

Three circles touch one another externally , The tangents at their points of contact meet at a point whose distance from the point of contact is 4. The ratio of product of their radii to the sum of radii of the circles is

A line which is perpendicular to the radius of the circle through the point of contact is called a ………