Question

'Tangent and the radius through the point of contact are perpendicular to each other'. This result is not required to prove as:

• A. tangents drawn from an external point to a circle are equal in length
• B. Angle between the tangents is supplementary to the angle formed by the radii through the points of contact at the ventre
• C. Opposite angles of a cyclic quadrilateral are supplementary
• D. Only one tangent can be drawn through a point on a given circle.

Answer 1

Answer:

C. Opposite angles of a cyclic quadrilateral are supplementary

'Tangent and the radius through the point of contact are perpendicular to each other'. This result is not required to prove as Opposite angles of a cyclic quadrilateral are supplementary.