May 2021 3 261 Report
anhtuan oi cho em hoi cai nay ti?

cho tam giac ABC co ^ABC = 40 do ^ACB =30 do ben ngoai tam giac do dung tam giac ADC co ^ACD= ^CAD =50 do chung minh rang tam giac BAD can

bai nay anh giai cho ban kia theo cach dung ham sin ma ah oi anh co the lam bai nay giup em theo cach lop 7 khong em cam on anh nhieu lam

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