粉末Z回忆 ,
∵BE分∠ABC成3:4
设∠ABE=3a°,则∠CBE=4a°
∴∠ABC=7a°
∵BD平分∠ABC
∴∠ABD=∠CBD=3.5a°
∵∠DBE=∠ABD-∠ABE=3.5a°-3a°=0.5a°=8°
∴a=16
∴∠ABC=7a=112°
粉末Z回忆 ,
∵BE分∠ABC成3:4
设∠ABE=3a°,则∠CBE=4a°
∴∠ABC=7a°
∵BD平分∠ABC
∴∠ABD=∠CBD=3.5a°
∵∠DBE=∠ABD-∠ABE=3.5a°-3a°=0.5a°=8°
∴a=16
∴∠ABC=7a=112°