Ответ:
AB = 15;
Cos(<ABC)=0.6
Cos(<ACB)=0
Cos(<BAC)=0.8
Объяснение:
AB = = 15;
Cos(<ABC)=BC/AB = 9/15 = 0.6
Cos(<BAC)=AC/Ab = 12/15 = 0.8
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Ответ:
AB = 15;
Cos(<ABC)=0.6
Cos(<ACB)=0
Cos(<BAC)=0.8
Объяснение:
AB = = 15;
Cos(<ABC)=BC/AB = 9/15 = 0.6
Cos(<ACB)=0
Cos(<BAC)=AC/Ab = 12/15 = 0.8