# Secant Secant Theorem Calculator

Calculate the exterior length of a secant segment when two secant segments intersect outside a circle. If two secants are intersecting outside a circle from a point, then the product of the lengths (C+D) of one secant segment and its external part of the segment equals the product of the lengths (A+B) of the other secant segment and its external part of the segment. Use this online Secant Theorem Calculator to find the exterior length of secant.

## Length of Two Intersecting Secants

Calculate the exterior length of a secant segment when two secant segments intersect outside a circle. If two secants are intersecting outside a circle from a point, then the product of the lengths (C+D) of one secant segment and its external part of the segment equals the product of the lengths (A+B) of the other secant segment and its external part of the segment. Use this online Secant Theorem Calculator to find the exterior length of secant.

Code to add this calci to your website

#### Formula:

A x B = C x D
**Where,**
A = Length of Secant 1
B = Exterior Length of Secant 1
C = Length of Secant 2
D = Exterior Length of Secant 2

#### Example

**Secant Length using Secant Secant Theorem**

A circle with Length of Secant 1 as 7cm, Exterior Length of Secant 1 as 8cm, Length of Secant 2 as 5cm.

Exterior Length of Secant 2 = 7 x 8 = 5 x D

=11.2 cm