sin A = -3/5 kuadran III Cos B = -7/25 dikuadran II tentukan nilai daritan A-B

[tex] \sin ( \alpha ) = \frac{ - 3}{5} \: \: \: \: \: \: \: \tan( \alpha ) = \frac{3}{4} \\ \cos( \beta ) = \frac{ - 7}{25} \: \: \: \tan( \beta ) = \frac{ - 24}{7} \\ \tan( \alpha - \beta ) = \frac{ \tan( \alpha ) - \tan( \beta ) }{1 + \tan( \alpha ) \tan( \beta ) } \\ = \frac{ \frac{3}{4} + \frac{24}{7} }{1 + \frac{ - 72}{28} } = \frac{ \frac{117}{28} }{ \frac{ - 44}{28} } = \frac{ - 117}{44} [/tex]
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