[latex] \frac{sin( \pi - \beta )*cos( \pi + \beta )*tg( \pi - \beta )}{sin( \frac{3 \pi }{2}- \beta )*ctg( \frac{3 \pi }{2} + \beta )*cos( \frac{ \pi }{2} + \beta ) } [/latex]

[latex] \dfrac{\sin( \pi - \beta )\cdot \cos( \pi + \beta )\cdot tg( \pi - \beta )}{\sin\bigg( \dfrac{3 \pi }{2} - \beta \bigg)\cdot ctg\bigg(\dfrac{3 \pi }{2} + \beta \bigg)\cdot \cos \bigg(\dfrac{ \pi }{2} + \beta \bigg)} =\\ \\ \\ = \dfrac{\sin \beta \cdot (-\cos \beta )\cdot (-tg \beta )}{(-\cos \beta )\cdot(-tg \beta )\cdot (-\sin \beta )} =-1[/latex]