17. Five marks exercise problem IV

In figure, $O$ is the centre of the circle with radius $5 \ cm$. $T$ is a point such that $OT = 13 \ cm$ and $OT$ intersects the circle $E$, if $AB$ is the tangent to the circle at $E$, find the length of $AB$.

 

Answer:

 

The length of $AB$ $=$ $\frac{i}{i}$ $cm$