Answer:
15 units
Step-by-step explanation:
The picture of the question in the attached figure
we know that
In the right triangle ABC
Applying the Pythagorean Theorem
[tex]AB^2=AC^2+BC^2[/tex]
we have
[tex]AB=17\ units\\AC=8\ units[/tex]
substitute the given values
[tex]17^2=8^2+BC^2[/tex]
solve for BC
[tex]289=64+BC^2\\BC^2=289-64\\BC^2=225\\BC=15\ units[/tex]
