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21.10.2020 •
Mathematics
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Ответ:
Ответ:
Given:
The figure of circle and two secants from an external point.
To find:
The value of x.
Solution:
According to intersecting secant theorem: If two secants (I and II) intersect each other outside the circle then
(I secant) × (external segment of I) = (II secant) × (external segment of II)
Using the intersecting secant theorem, we get
Divide both sides by 7.
Therefore, the value of x is 11.