Question

in triunghiul ABC cu [AB] = [AC] construim bisectoarea BD, D apartine (AC) . Daca m ( ABD) = 19Grade, aflati masurile inghiirilor triinghiului ABC

Answer 1

m( ABC)= m(ABD)*2-------BD bisectoare
m(ABC)=19*2=38 grade
m(ACB)=m(ABC)----------[AB]=[AC]
m(ACB)=38grade
m(BAC)=180-[m(ABC)+m(ACB)]
m(BAC)=180-(38+38)
m(BAC)=180-76
m(BAC)=104 grade