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09-09-2021
Mathematics

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In the figure below, a tangent and a secant are drawn to a circle from exterior point E. Suppose that EC= 10.8 and EG= 18. Find CD.

In the figure below a tangent and a secant are drawn to a circle from exterior point E Suppose that EC 108 and EG 18 Find CD class=

Respuesta :

09-09-2021

Answer: 19.2

Step-by-step explanation:

Using power of a point with respect to a circle:

EG²=EC*ED ==> ED=18²/10.8=30

CD=ED-EC=30-10.8=19.2

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