In the figure, the diameter `AOB` is produced to meet the tangent at a point `C (D` is the point of contact of tangent to the circle). Show that `a = 90-2b,` where `ltACD = a^@ and ltADC = b^@.`

A tangent meets a circle in……. Points .

In the figure, O is the centre of the circle . Seg AB is the diameter at the point C on the circle the tangent CD is drawn. Line BD is a tangent to the circle at point B. Show that seg OD || chord AC.

In the adjoining figure, O is the centre and seg AB is a diameter. At the point C on the circle, the tangent CD is drawn. Line BD is a tangent to the circle at the point B. Show that segOD || chord AC.

In the given figure, AD is a diameter of a circle with centre O and AB is a tangent at A. C is a point on the circle such that DC produced intersects the tangent at B and |__ABD=50^(@) . Find |__COA .

The common point of a tangent to a circle and the circle is called the point of contact.

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.

Let the midpoint of the chord of contact of tangents drawn from A to the circle x^(2) + y^(2) = 4 be M(1, -1) and the points of contact be B and C

Let the midpoint of the chord of contact of tangents drawn from A to the circle x^(2) + y^(2) = 4 be M(1, -1) and the points of contact be B and C