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 point R and Q. Show that the lines from R and Q 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

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

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

Two parallel tangents to a given circle are cut by a third tangent at the points A and B. If C is the center of the given circle,then /_ACB depends on the radius of the circle.depends on the center of the circle.depends on the slopes of three tangents.is always constant

Two parallel tangents of a circle meet a third tangent at points P and Q. Prove that PQ subtends a right angle at the centre.

The number of parallel tangents to a circle with a given tangent is ……

Show that tangent lines at the end points of a diameter of a circle are parallel.

Show that tangent lines at the end points of a diameter of a circle are parallel.

If two parallel tangents drawn to a circle with centre O are intersected at the points D and E respectively by a tangent drawn at another point on the circle,then show that angleDOE=90^@