# What are the Angle Units? All you need to know

## Introduction

Angle units are used to measure the rotation or inclination of lines, segments, or planes relative to each other. They are essential in mathematics, physics, engineering, and various other fields. This guide provides an overview of common angle units and their applications.

## Degrees (°)

Degrees are the most commonly used unit for measuring angles. A complete circle is divided into 360 degrees, with each degree further divided into minutes ('). For example, 1 degree equals 60 minutes.

## Radians (rad)

Radians are another important unit for measuring angles, particularly in trigonometry and calculus. One radian is defined as the angle subtended at the center of a circle by an arc whose length is equal to the radius of the circle. Since the circumference of a circle is 2π times its radius, there are 2π radians in a complete circle.

## Gradians (gon or grad)

Gradians divide a circle into 400 equal parts, making it a more convenient unit for calculations involving right angles. One gradian is equal to 0.9 degrees.

## Applications

1. **Mathematics:** Angle units are fundamental in geometry, trigonometry, and calculus for solving problems related to angles, circles, and curves.

2. **Navigation:** Degrees are commonly used in navigation and map reading to indicate directions and bearings.

3. **Engineering:** Engineers use angle units in design and construction to ensure accurate alignment and positioning of components.

## Conclusion

Angle units play a crucial role in various fields, providing a standardized way to measure and quantify rotations and inclinations. Whether it's degrees, radians, or gradians, each unit offers unique advantages and is chosen based on the specific requirements of the application.