20-08-2019
Mathematics

contestada

help please!! solve the triangle

help please solve the triangle class=

Respuesta :

20-08-2019

By Using the Law of Cosines:

AC = sqrt(AB^2 + BC^2 - 2*AB*BC*cos(B)) = sqrt(169 + 441 - 2*21*13*cos(115)) ~ 29

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