📊
Unit Circle
★★☆☆☆Middle School
📖Definition
The unit circle is a circle with radius 1 centered at the origin. It's a fundamental tool for defining and visualizing trigonometric functions.
📐Formulas
x² + y² = 1
Unit circle equation
(x, y) = (cos θ, sin θ)
Point on unit circle
✏️Examples
예제 1
Find the coordinates on the unit circle when θ = π/4.
⚡Applications
Mathematics
Geometric definition of trig functions
Physics
Circular motion, rotation systems
🔗Related Documents
→Prerequisites
←Next Topics
↔Related
#단위원#삼각함수#unit circle#trigonometry