Please help me guys idk what it is

Answer: the answer would be one because they are both the same length and there is an acute angle
Step-by-step explanation:
To find one of the legs of a right triangle, you subtract one of the legs squared from the hypotenuse squared.
[tex]7^{2} - 1^{2} = \sqrt{48}[/tex]
The length of the third side is [tex]\sqrt{48}[/tex]