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🔄 Coterminal Angle Calculator
Find angles that share the same terminal side.
Principal Coterminal Angle
Origin
Principal Angle (0° to 360°)
–° — radOther Coterminal Examples
+1 Rotation: –°
+2 Rotations: –°
-1 Rotation: –°
-2 Rotations: –°
The Formula
Coterminal angles ($\theta’$) are found by adding or subtracting multiples of $360^\circ$ (or $2\pi$ radians) to the original angle ($\theta$).
$$\theta’ = \theta + 360^\circ k$$
where $k$ is any integer ($\pm 1, \pm 2, \ldots$).
**Disclaimer:** The visualization shows the terminal side of the Principal Angle (0° to 360°). It does not show the full rotation path of the input angle.
