Trigonometric Functions and Identities

$$\frac{1}{\cos\left(x\right)}$$

$$\frac{1}{\sec\left(x\right)}$$

$$\frac{\sin\left(x\right)}{\cos\left(x\right)}$$

$$\frac{\cos\left(x\right)}{\sin\left(x\right)}$$

$$\frac{1}{\tan\left(x\right)}$$

$$\frac{1}{\sin\left(x\right)}$$

$$\frac{1}{\csc\left(x\right)}$$

$$\sin\left(-x\right)$$

$$\cos\left(-x\right)$$

$$\sin^2\left(x\right) + \cos^2\left(x\right)$$