Unit Circle Explorer

Drag the slider or click a snap button to rotate the terminal side. Use ← → arrow keys for fine control.

Current Angle
0
(cos θ, sin θ) = (1, 0)
x-axis
0°
Snap to:
Terminal side
Initial side (fixed)
cos(θ) — x coordinate
sin(θ) — y coordinate
Special angles

← → arrow keys move the angle by 1° at a time