## Tangent

### In mathematics, the tangent function, denoted as tan(x), is one of the trigonometric functions used to relate the angles of a right triangle

In mathematics, the tangent function, denoted as tan(x), is one of the trigonometric functions used to relate the angles of a right triangle. The tangent of an angle in a right triangle is defined as the ratio of the length of the side opposite the angle to the length of the side adjacent to the angle.

To visualize this, consider a right triangle with one of its acute angles labeled as θ. The side opposite to angle θ is referred to as the “opposite” side, and the side adjacent to θ is called the “adjacent” side. The tangent of angle θ, tan(θ), is equal to the ratio of the length of the opposite side to the length of the adjacent side.

Mathematically, we can express the tangent function as follows:

tan(θ) = opposite/adjacent

However, it’s important to note that the tangent of an angle is not limited to right triangles. The tangent function is a periodic function that can take on any value as the angle varies. It has a period of π radians (or 180 degrees), meaning it repeats every π radians or 180 degrees.

The tangent function can be used to solve various problems involving angles and triangles. In addition, it has a wide range of applications in fields such as physics, engineering, and computer science, especially in areas dealing with periodic phenomena and waveforms.

It’s worth mentioning that, while the tangent function has defined values for certain angles, it is not defined for certain specific values of the angle where the adjacent side is zero. For example, tan(90 degrees) or tan(π/2) is undefined because the opposite side would be non-zero but the adjacent side would be zero. These undefined points are known as “vertical asymptotes” in the graph of the tangent function.

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