Same thing here with Pythagorean's theorem, we are just going to rearrange it to find something else. Let's assume that from the start to check point B is A. Let's solve the theorem for A then.
A^2+B^2=C^2 (subtract B^2 from both sides)
A^2=C^2-B^2 (now take the square root of both sides)
A=
Add in your numbers now and you get
A=
A= 16 yards
A^2+B^2=C^2 (subtract B^2 from both sides)
A^2=C^2-B^2 (now take the square root of both sides)
A=
Add in your numbers now and you get
A=
A= 16 yards