giải giúp mình bài này nha

B

bomkhinhkhi

bài này khó quá, tớ cũng không làm được
srrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
 
T

thcong

cho thêm dữ kiện đường cao đi
có thể cho trực tiếp hoặc thông qua góc giữa SC và mặt đáy bằng bao nhiêu chẳng hạn
 
C

chinsutoiot

hix......... bạn ơi bài nayf chỉ có hỏi chúa thui....... thiếu dữ kiện bạn ak````````` :)
 
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