Tam giác ABC vuông tại A , AB =10cm , BC =20cm.
a) Giải tam giác vuông ABC
b) Kẻ AH vuông góc BC.Tính AH,BH,CH

( Cần gấp ! )

Giúp mình với,cần gấp !!!

D

B

Tham khảo

Punishment can be an effective way of disciplining children, but it needs to be done in a manner that is both constructive and meaningful. Sending naughty students to the library to read books and send feedbacks as punishment is one such method that can help teach children the importance of reading and also instill discipline. The feedbacks could help teachers understand how well the students have understood the material, which would help them in their future teaching strategies. This method of punishment could also help build a culture of reading among school-goers, which would benefit them in the long run.

đánh máy ghê thiệt :vv