##### Need Geometry help to calculate the length of a segment

 Mathematics Tutor: None Selected Time limit: 1 Day

Nov 15th, 2015

-------------------------------------------------------------------------------------

We have to make use of the below theorem to solve this problem.

If a secant segment and tangent segment are drawn to a circle from the same external point, the product of the length of the secant segment and its external part equals the square of the length of the tangent segment.

$\\ AB^2=AD\times AC\\ \\ AB^2=7\times 28\\ \\ AB^2=196\\ \\ AB=\sqrt{196}\\ \\ AB=14$

-------------------------------------------------------------------------------------

Nov 15th, 2015

...
Nov 15th, 2015
...
Nov 15th, 2015
Mar 26th, 2017
check_circle