Réponse : For this question you have to use Pythagoras's theorem.
whether, ABC a triangle right in A, according to the Pythagorean theorem, we write:
BC²=AC²+AB²
19²= 18²+AB²
AB²= 19²-18²
=361-324
=37
AB=R(37)
~=6.1
So, the other legs measures nearly 6.1
I hope you can understand what I'm saying.
Explications étape par étape :