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23 September, 06:45

Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AC = 8

and BC = 4, what is the length of DC? (Note: the figure is not drawn to scale.)

A

D

X

+1
Answers (1)
  1. 23 September, 09:02
    0
    6.928, or 4 (squareroot3)

    Explanation:

    a^2+b^2=c^

    so, 4^2+b^2=8^2

    16+b^2=64

    b^2=48

    so, DC=6.928, or 4 (squareroot3)
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