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Ten B В 15 cm А 20 cm С C
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Ten B В 15 cm А 20 cm С C

User Arunesh Singh
by
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1 Answer

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Tangent segment, of a circle

Apply formulas

20^2 - 15^ 2 = AB^2

Also

15^2 = 20•( 20 - AB)

225 = 400 - 20AB

Then

20AB = 400-225= 175

AB = √ 175= 13 + 6/25 =13.24

User Lamakaha
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