Two parallel tangents to a given circle are cut by a third tangent at the point `Ra n dQ` . Show that the lines from `Ra n dQ` to the center of the circle are mutually perpendicular.

Two parallel tangents to a given circle are cut by a third tangent at the points Aa n dBdot If C is the center of the given circle, then /_A C B (a)depends on the radius of the circle. (b)depends on the center of the circle. (c)depends on the slopes of three tangents. (d)is always constant

A Tangent to a circle is a line which touches the circle at only one point.

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

Prove that the tangent and the radius through the point of contact of a circle are perpendicular to each other.

The tangent at any point on the curve x=acos^3theta,y=asin^3theta meets the axes in Pa n dQ . Prove that the locus of the midpoint of P Q is a circle.

The tangent to a circle and the radius passing through the point of contact are perpendicular to each other.

The length of the tangent drawn to a circle of rdius 4 cm from a point 5 cm away from the centre of the circle is___

Fill in the blanks Prove that the tangents to a circle at the end points of a diameter are parallel.