[tex] \alpha = 180 + \beta \\ \\ \beta = { \tan( \frac{4}{3} ) }^{ - 1} \\ \\ \beta = 53.2 \\ \\ \alpha = 180 + 53.2 \\ = 233.2 \\ \\ \cos( \alpha ) = \cos(233.3) \\ = - 0.6 \\ = - \frac{3}{5} [/tex]
RESPUESTA D
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[tex] \alpha = 180 + \beta \\ \\ \beta = { \tan( \frac{4}{3} ) }^{ - 1} \\ \\ \beta = 53.2 \\ \\ \alpha = 180 + 53.2 \\ = 233.2 \\ \\ \cos( \alpha ) = \cos(233.3) \\ = - 0.6 \\ = - \frac{3}{5} [/tex]
RESPUESTA D