Answers

2015-02-06T20:34:34+05:30
so according to fig.,
x=2y(ext. angle = sum of int. oppoite angles.)
 so DBC=ACB=2y
 so BAC+ABC+BCA=180 
y+2y+2y=180
5y=180
y=180/5=36°

BAC=y=36°
1 5 1
i think, it's fine now.:)
hh great sorry that was my mistake!
no problem.:)