Answer:
[tex]\sqrt{207}[/tex]
Step-by-step explanation:
Use the right triangle formula c^2=a^2+b^2
C is the number of the hypothenuse while b and c are the 2 others.
16^2=7^2+a^2
256=49+a^2
now solve for the equation.
a^2=207
now take the square root of both.
a=[tex]\sqrt[2]{207}[/tex]
