Answer:
UT = 15
Explanation:
Its okay this was a hard one to know. since its a 90 degrees angle you can use the Pythagorean theorem.
A^2 + B^2 =C^2
but in this case they give you c and as for b
so it be C^2 - A^2 = B^2
17^2 - 8^2 = B^2
289 - 64 = B^2
225 = B^2
now you square both sides getting B =
![√(225)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/78d46sk5vye2ffupaii610r45ri2twturp.png)