Prove that the angle between the two tangents drawn from an external point to a circle is supplementary to the angle subtended by the line - segment joining the points of contact at the centre.

Prove that the angle between the two tangents drawn from an external point to a circle is supplementary to the angle subtended by the line -segment joinig the point of contact at the centre.

Prove that the lengths of tangents drawn from an external point to a circle are equal.

The lengths of the two tangents from an external point to a circle are equal.

The two tangents drawn to a circle at the end points of a diameter are ......... to each other.

The tangent at any point of a circle is perpendicular to the radius through the point of contact.

Find the angle between the X-axis and the line joining the points (3,-1) and (4,-2) .

If two tangents from point P to a circle are inclined to each other at a angle of 14 0^(@), at what angle will the radii from the points of contact of those tangents be inclined ?

The pair of tangents AP and AQ drawn from an external point to a circle with centre O are perpendicular to each other and the length of each tangent is 4 cm. Then, the radius of the circle is ... cm.

Two tangent are drawn from the point (-2,-1) to parabola y^2=4x . if alpha is the angle between these tangents, then find the value of |tanalpha| .