Question

4.3 secants and tangents
in the image above, ( ad = 9 ) and ( be = 12 ).
( bd=)

Explanation:

Step1: Use the property of tangents from a common external point

If two tangent segments are drawn from the same external point to a circle, then the two tangent segments are congruent.
For point \(B\), \(BD = BE\) (tangents from point \(B\) to the circle).

Answer:

\(12\)