## 正割 (Zhènggē – Secant)

This tag categorizes content related to the trigonometric function of **secant (正割)**. Articles tagged with “正割” will explore:

* **Definition and Properties:** Understanding the definition of secant, its relationship to cosine, its domain, range, and other key properties.
* **Applications:** Exploring practical applications of secant in fields like geometry, physics, engineering, and navigation.
* **Graphs and Visualizations:** Visualizing the behavior of the secant function through graphs and diagrams.
* **Problem Solving:** Examples and solutions involving the secant function, including calculations, trigonometric identities, and more.
* **Related Concepts:** Connecting secant to other trigonometric functions (sine, cosine, tangent, cotangent, cosecant) and their interrelationships.

Whether you’re a student studying trigonometry, a teacher creating educational resources, or simply curious about this fundamental concept, this tag will help you find relevant content.