Example 2
Find the valueof the variable.Segmentsof Secantsand Tangents
TheoremIf a tangentand a secantare drawnfrom a pointoutsidethe circlethen the segmentsof the secant
and the tangentsatisfythe followingrelationship
This meansthat the productof the outsidesegmentof the secantand its wholelengthequalsthe square
of the tangentsegment.
Proof
We connectpoints and and points and to make and.