Тригонометрия. Введение.

 $\frac{\text{36}\cdot\sin102\degree\cdot\cos102\degree}{\text{sin204}\degree}$  

(a)  

 $14\sqrt{6}\cos\ \frac{\pi}{6}\cdot\cos\frac{3\cdot\pi}{4}$  

(a)  

 $\frac{28}{\sin\left(-\frac{25\pi}{4}\right)\cdot\cos\left(\frac{23\pi}{4}\right)}$  

 $−17\sqrt{3}tg(1050°)$  

 $\frac{23tg59°}{tg121°}$  

(a)  

 $\frac{-9}{\sin^218°+\cos^2198°}$  

(a)  

 $\sqrt{32}\cos^2\ \frac{3\pi}{8}-\sqrt{32}\sin^2\ \frac{3\pi}{8}$  

(a)  

 $\frac{24}{\sin^2127°+1+\sin^2217°}$  

(a)  

 $\frac{\sqrt{2}}{8}\cdot\frac{\sin130°∙\cos5°−\sin40°∙\sin5°}{\sin10°∙\cos20°+\sin100°∙\sin20°}$  

(a)  

 $\frac{2\cos(−3π−β)+\sin(−\ \frac{\pi}{2}+β)}{3\cos(β+π)}$  

(a)