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Tangent of a Circle Calculator
Calculate the tangent segment length from an external point
Formula: $t = \sqrt{d^2 - r^2}$, where $r$ is the circle's radius and $d$ is the distance from the external point to the center. Enter values below.
Circle and Point Parameters Input
Calculation Results
⚠️ For educational purposes only. Verify results with a qualified professional when making important decisions.