Answer:
5
Step-by-step explanation:
Hey There!
To find the length of this missing side we are going to use the Pythagorean theorem
[tex]a^2+b^2=c^2[/tex]
or the two legs squared added together equal the hypotenuse squared
we are given the hypotenuse and a leg so to find t we do
[tex]13^2-12^2=t^2[/tex]
[tex]13^2=169\\12^2=144\\168-144=25\\\sqrt{25} =5[/tex]
therefore t = 5
