Question

7)ΔABC dreptunghic
m(<A)=90 grade
AD perpendicular BC
De(BC)
BD=12 cm
m(<B)=60 grade
_________
AC?

Answer 1

AC +m lui  A₊M lui B =180 GRADE

AC+90grade+60grade=180grade

AC+150 de grade=180 grade

AC=30 grade