Answers

2015-02-07T13:22:47+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°

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