Prove that the tangents to two intersecting circles from any point in the extension of the common chord are equal.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter6: Circles
Section6.4: Some Constructions And Inequalities For The Circle
Problem 41E
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Prove that the tangents to two intersecting circles from any point in the extension of the common chord are equal. 

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