Question

ABC Dreptunghic; m(A) = 90°; AC = 7 cm; AB = 24 cm; BC = ?

Answer 1

< A = 90

Teorema Pitagora :

$ac {}^{2} + ab {}^{2} = bc {}^{2}$

$7 {}^{2} + 24 {}^{2} = bc {}^{2}$


$49 + 576 = bc {}^{2}$


$bc = \sqrt{625}$


$bc = 25$

Answer 2

teorema lui pitagora
triunghiul ABC
m (unghiului A)=90°=>BC^2=AB^2+AC^2
BC^2=24^2+7^2
BC^2=576+49
BC^2=625
BC=radical din 625
BC=25