Tan

Tan is a mathematical term we know,

Used to measure angles, as you may already know,

It's a ratio, a simple and elegant way,

To describe the relationship, night or day.

Of the opposite and adjacent sides,

In a right triangle, it's a mathematical guide,

To determine the slope, or the angle's degree,

In trigonometry, it's a fundamental key.

Tan, oh tan, in math, you stand,

A measure of angles, in every hand,

Of those who seek to understand,

The relationships of lines on land.

With your ratio, you make it clear,

The slope of lines, without a fear,

In trigonometry, you play a part,

A simple concept, with a complex heart.