Josenoguez7431
30.01.2022 •
Mathematics
Work out length of ac using cosine rule
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Ответ:
AC=14.8 cm
Step-by-step explanation:
AC^2=AB^2 +BC^2 -2(AB×BC×cos(ABC))
AC^2=7^2 +10^2 -2(7×10×cos(120))
AC^2=219
AC=sqrt(219)= 14.8 cm
Ответ: