Respuesta :

legomyego180

[tex]a^{2} = {b}^{2} + {c}^{2} - 2bc \cos( \alpha) [/tex]
[tex]a = \sqrt{ {8}^{2} + {14}^{2} - 2(8)(14) \cos(67) } [/tex]
[tex]a = 13.13[/tex]