sin 150+cos 60 per tan 315

[tex]sin 150 {}^{0} = \frac{1}{2} \\ cos60 {}^{0} = \frac{1}{2} \\tan315 {}^{0} = - 1 \\ jadi \\ \frac{ \frac{1}{2} + \frac{1}{2} }{ - 1} = \frac{1}{ - 1} = - 1[/tex]
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