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Greeley [361]
3 years ago
6

In the figure, BD¯¯¯¯¯ bisects ∠ABC .

Mathematics
1 answer:
pashok25 [27]3 years ago
5 0
The bisector BD is perpendicular to the line segment AC then the angle formed in between is 90°. We can solve for DC using SOH CAH TOA theorem or Pythagorean theorem.
Since ∠BDA is 90°, we can examine that AD is equal to 2units. Proving this, we have BD^2=BD^2+AD^2.
3^2=DB^2+2^2
DB=5units
Therefore, DC=AC-AD and the answer is 2 units.

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