Question

In the figure ,seg BD and seg CD are the bisectors of angle B and angle C respectively. if measure of angle bpc =120° ,find measure of angle BAC

Answer 1

60 degree
angle b+d+c =180
120+c+b=180
b,c =30 it's half so full will be 60,60
60+60+a=180
a=180-120
=60