THANKS

来源：学生作业帮助网编辑：作业帮时间：2024/05/03 11:12:48

THANKS
THANKS

THANKS
∵∠ABC＝∠C＝2∠A,∠A+∠ABC+∠C＝180
∴∠A+2∠A+2∠A＝180
∴∠A＝36
∴∠C＝2∠A＝72
∵BD⊥AC
∴∠DBC+∠C＝90
∴∠DBC＝90-∠C＝18°

THANKS thanks: Thanks thanks thanks Thanks! -Thanks. thanks thanks! thanks thanks! thanks thanks thanks thanks~ thanks thanks ,thanks!