cho tam giac abc can tai a,goc a tu duong cao ad truc tam h
tinh ad biet ah=14,hb=hc=30cm
dung he thuc luong ho minh.THS!!!
cho tam giac abc can tai a,goc a tu duong cao ad truc tam h
tinh ad biet ah=14,hb=hc=30cm
dung he thuc luong ho minh.THS!!!
cho tam giac nhon abc.AD la duong cao,h la truc tam , g la trong tam tam giac
1.CMR:tanB.tanC=AD/HD
2.khi hg song song bc.CMR:tanB.tanC=3
TKS!!!
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