A (Assertion): A tangent to a circle is perpendicular to the radius through the point of contact. Statement R( Reason): The length of tangents drawn from an external point to a circle are equal.

Question :A (Assertion): A tangent to a circle is perpendicular to the radius through the point of contact. Statement R( Reason): The length of tangents drawn from an external point to a circle are equal.

The correct answer :A tangent to a circle is perpendicular to the radius through the point of contact is true, while the statement that the length of tangents drawn from an external point to a circle are equal is not always true. The length of the tangent from an external point to a circle depends on the distance between the point and the center of the circle.

Therefore, the assertion is true, but the reason is false.