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In this diagram, like segment AD is tangent and line segment AC is secant. If AB = 6 and BC = 18, what is the length of line segment AD?

In this diagram like segment AD is tangent and line segment AC is secant If AB 6 and BC 18 what is the length of line segment AD class=

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sqdancefan

9514 1404 393

Answer:

  12

Step-by-step explanation:

The applicable relationship here is ...

  AD² = AB·AC

  AD = √(AB·(AB +BC)) = √(6·(6+18)) = √144

  AD = 12

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