Тригонометрия, теория

$$\frac{11\pi}{2}$$

$$\frac{3\pi}{4}$$

$$-\frac{5\pi}{6}$$

$$\frac{11\pi}{6}$$

A

B

C

D

$$-\frac{11\pi}{2}$$

$$\frac{3\pi}{2}$$

$$-5\pi$$

$$100\pi$$

I

II

III

IV

$$\cos\alpha$$

$$\sin\alpha$$

$$tg\ \alpha$$

$$\operatorname{ctg}\alpha$$

$$\cos\alpha$$

$$\sin\alpha$$

$$tg\ \alpha$$

$$\operatorname{ctg}\alpha$$

$$\frac{\pi}{4}$$

$$\frac{\pi}{2}$$

$$\frac{3\pi}{4}$$

$$-\frac{3\pi}{4}$$

$$0$$

$$1$$

$$-1$$

$$\frac{1}{2}$$

$$\frac{1}{2}$$

$$\frac{\sqrt[]{2}}{2}$$

$$-\frac{\sqrt[]{2}}{2}$$

$$\frac{\sqrt[]{3}}{2}$$

$$1$$

$$-1$$

$$0$$

$$не\ определен$$