Тригонанаметриялық өрнектер1

$$\sin\frac{\pi}{3}=\frac{1}{2}$$

$$\cos\ \frac{2\pi}{3}=-\frac{1}{2}$$

$$tg45\degree=1$$

$$\operatorname{ctg}30\degree=\sqrt[]{3}$$

$$\sin x+\cos x=1$$

$$\sin^22\degree+\cos^22\degree=1$$

$$\sin60\degree=\sin\left(-60\degree\right)$$

$$\sin22\degree=\cos\ 69\degree$$

$$30\degree=30\degree\cdot\frac{\pi}{180\degree}$$

$$\sin71\degree=\cos\ 19\degree$$

$$\sin5\ >1$$

$$-1\le\cos15\le1\$$

$$2\approx114,6\degree$$

$$\sin^230\degree=\left(\sin30\degree\right)^2$$

$$\sin\left(\frac{\pi}{2}+456\degree\right)=-\cos456\degree$$

$$\sin390\degree=\sin30\degree=\sin750\degree$$

$$\sin x>0\ ;\ \cos x\ <0;\ tgx\ >0\ ;\ \operatorname{ctg}x<0$$

$$\sin x>0;\ \cos x>0;\ \operatorname{ctg}x<0\ ;\ tgx>0$$

$$\sin x>0;\ \cos x<0\ ;\ tgx>0;\ \operatorname{ctg}x<0$$

$$\sin x>0\ ;\ \cos x\ <0;\ tgx<0;\ \operatorname{ctg}x<0$$

$$2\cos^235\degree-1$$

$$2\cdot\sin35\degree\cdot\cos35\degree$$

$$\cos^235\degree-\sin^235\degree$$

$$1-2\sin^235\degree$$

$$\cos\left(-80\degree\right)$$

$$2\cos^240\degree+1$$

$$1+2\sin^240\degree$$

$$\sin^240\degree-\cos^240\degree$$

$$\sin5\alpha\cdot\cos5\alpha$$

$$-2\sin5\alpha\cdot\cos5\alpha$$

$$\sin\left(\pi+10\alpha\right)$$

$$2\sin5\alpha\cdot\cos5\alpha$$

$$x\in\left(-\infty;+\infty\right)$$

$$x\in\left[-1;1\right]$$

$$x\in\left[-\frac{\pi}{2};\frac{\pi}{2}\right]$$

$$x\in\left[0;\pi\right]$$