Answer:

phillipking09141 is CORRECT
I had the same question and it is just flipped around.
Here is what I put (I got it correct):
=
+

Sequence:
8^2 is the hypotenuse
b^2 is the unknown leg
4^2 is the known leg
btw when you say 8 squared it means
just to point that out ^-^
So please give phillipking09141 five stars ⭐⭐⭐⭐⭐
for all the people who can't see