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Rotation Calculator
Rotate point $(x, y)$ counterclockwise about the origin by angle $\theta$
Formula: Rotation about the origin counterclockwise by angle $\theta$: $x' = x \cos(\theta) - y \sin(\theta)$ and $y' = x \sin(\theta) + y \cos(\theta)$. Enter point and angle below.
Point Coordinates
Rotation Angle
Calculation Results
⚠️ For educational purposes only. Verify results with a qualified professional when making important decisions.