\(PQ\) is a chord of length \(8 cm\) of a circle of radius \(5 cm\). The tangents at \(P\) and \(Q\) intersect at a point \(T\) (see Fig. 10.10). Identify  the dimension \(TP\).
 
YCIND_240418_6199_circles_17.png
 
The measure of \(TP\) is