Question

5. Exercises 2-4. Use the diagram below С 3 ICB=6 and AC =9, find DC.

Answer 1

Given:

CB = 6

AC = 9

Since both triangles are similar triangles, to find DC, use the formula below:

`(DC)/(CB)=(CB)/(AC)`

Thus, we have:

`(DC)/(6)=(6)/(9)`

Let's solve for DC.

Multiply both sides by 6:

`\begin{gathered} (DC)/(6)\ast6=(6)/(9)\ast6 \\ \\ DC=(36)/(9)=4 \\ \\ DC=4 \end{gathered}`

ANSWER:

DC = 4