From the given diagram, we can extract the triangle:
Required: The length of the side CB
Using Pythagoras theorem:
[tex]Hypothenuse^2\text{ = Opposite}^2\text{ + Adjacent}^2[/tex]
Substituting the given sides:
[tex]\begin{gathered} CB^2\text{ = CD}^2\text{ + CB}^2 \\ CB^2\text{ = 3}^2\text{ + 4}^2 \\ CB^2\text{ = 25} \\ CB\text{ = }\sqrt{25} \\ CB\text{ = 5} \end{gathered}[/tex]
Answer:
CB = 5
