Coterminal Angle Explorer
Uncover the world of coterminal angles! Easily find or verify angles in degrees and radians with this interactive and visual tool.
Enter your angle and explore coterminal relationships.
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Understanding Coterminal Angles
Coterminal angles are angles that share the same initial and terminal sides. They differ by multiples of 360° (or 2π radians), representing full rotations. For example, 30° and 390° are coterminal because 390° = 30° + 360°.
To find coterminal angles, add or subtract multiples of 360° (degrees) or 2π (radians). This tool helps you find coterminal angles within the range [0°, 360°) or [0, 2π), and check if two angles are coterminal.
Use this calculator to easily explore and understand coterminal angles in trigonometry and geometry.