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Usimov [2.4K]
2 years ago
13

Heeellllllllllllllllppppppppppp

Mathematics
1 answer:
AveGali [126]2 years ago
3 0

Answer:

Step-by-step explanation:

Xét ∆ABC có:

C= 180-30-45=105°

D= 180-105-45÷2= 75-22,5= 52,5°

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