anonymous
  • anonymous
Find the measure of line DC and line AD. Line DB is an altitude. (see figure below) Plz answer, thanks :D
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
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anonymous
  • anonymous
Both triangles are right-angled triangles. Thus u can use Pythagoras theorem to solve the question. If u do not know what the theorem is about, see drawing.. |dw:1329221023919:dw| the theorem states that, the 3 sides are related by the equation. a^2 +b^2 = c^2 Thus back to the question.. DA = sqrt (8^2 + 10^2 ) =12.8 DC = sqrt (8^2 + 12^2) =14.4
Directrix
  • Directrix
@alyn --> Do you need the answers in simplified radical form?

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anonymous
  • anonymous
yes, i do...
anonymous
  • anonymous
i need the answers in simplified radical form
Directrix
  • Directrix
DA = √ 164 = 2 √ 41 DC =4 √ 13
anonymous
  • anonymous
DC^2=BC^2-BD^2 DC^2=144-64 DC^2=80 DC=SQRT(80) AC=AB+BC AC=10+12 AC=22

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