Answer:
15[tex]\sqrt{2}[/tex]
Step-by-step explanation:
The given is a special right triangle and an isosceles
The angles are 45-45-90 and side lengths are represented by a-a-a[tex]\sqrt{2}[/tex]
Here as we can see the side length which sees angle measure 45 is 15 (that is represented by a) so a = 15
if a is 15 then x = 15[tex]\sqrt{2}[/tex]
