Calc2 trig identities

$$1 + \tan^2(x)$$

$$\sec^2(x)$$

$$1 + \cot^2(x)$$

$$\csc^2(x)$$

$$\sin(A \pm B)$$

$$\sin(A)\cos(B) \pm \cos(A)\sin(B)$$

$$\cos(A \pm B)$$

$$\cos(A)\cos(B) \mp \sin(A)\sin(B)$$

$$\tan(A \pm B)$$

$$\frac{\tan(A) \pm \tan(B)}{1 \mp \tan(A)\tan(B)}$$

$$\sin(2x)$$

$$2\sin(x)\cos(x)$$

$$\tan(2x)$$

$$\frac{2\tan(x)}{1 - \tan^2(x)}$$

$$\sin(x/2)$$

$$\pm\sqrt{\frac{1-\cos(x)}{2}}$$

$$\cos(x/2)$$

$$\pm\sqrt{\frac{1+\cos(x)}{2}}$$

$$\frac{d}{dx}[\cot(x)]$$

$$-\csc^2(x)$$

$$\frac{d}{dx}[\csc(x)]$$

$$-\csc(x)\cot(x)$$

$$\frac{d}{dx}[\sec(x)]$$

$$\sec(x)\tan(x)$$

$$\int\sec(x)dx$$

$$\ln|\sec(x) + \tan(x)| + C$$

$$\int\csc(x)dx$$

$$-\ln|\csc(x) + \cot(x)| + C$$