Secant of a Circle Calculator

Calculate the interior length of a secant segment when two secants intersecting from a point outside the circle. If two secants are intersecting inside a circle from a point, then the product of the secant length (A) and exterior part of that segment (B) equals the product of other secant length (C) and exterior part of that segment (D). Here is a free online Secant of a Circle Calculator to calculate the length of two intersecting secants inside the circle.

Intersecting Secant Theorem Calculator

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Formula:

(A+B) x B = (C+D) x D Where, A = Exterior Length of Secant 1 B = Interior Length of Secant 1 C = Exterior Length of Secant 2 D = Interior Length of Secant 2

Example

Secant Length using Intersecting Secant Theorem
A circle with Exterior Length of secant 1 as 8cm, Interior Length of Secant 1 as 9cm, Interior Length of secant 2 as 6cm.
Exterior Length of Secant 2 of a circle = ((8+9) x 9) = ((C+6) x 6)
19.5 cm


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