Tangent of a circle calculator

Tangent of a circle calculator calculates the length of the tangent line based on the radius and the line of tangency.

How to calculate the tangent of a circle?

The tangent of a circle is a line perpendicular to the radius, to calculate the tangent of the circle, follow these steps.

1. Measure the radius of the circle AO.

2. Measure the line of tangency BO: the line intersects both the tangent line (AB) and the radius of the circle (AO).

3. Use the pythagorean theorem to find the length of the tangent line:

AB² = BO²-AO²

while
AB = tangent line.
BO = line of tangency.
AO = the radius of the circle.