Length of the Angle Bisector Calculator

Calculate the Angle Bisector Length

Effortlessly determine the length of an angle bisector in a triangle using our free online calculator. Simply input the three side lengths (a, b, and c) to receive precise measurements instantly. This essential tool is ideal for students, educators, and anyone working with geometric problems, providing quick and accurate solutions for triangle analysis.

Formula:

Length of the Angle Bisector (la) Formula:
la = √bc(1 - (a2/(b+c)2))

Where:

  • la = Length of the angle bisector of angle A
  • a = Length of the side opposite angle A
  • b = Length of the side adjacent to angle A (forming angle A)
  • c = Length of the other side adjacent to angle A (forming angle A)

Mathematics and Geometry Tools

3D Section Formula for Dividing Line Segments by Ratio

Go to Calculator

Alternate Interior Angles Theorem Proof

Go to Calculator

Altitude of an Isosceles Triangle

Go to Calculator

Base Edge of a Square Pyramid

Go to Calculator

Base of a Triangle : Easily Find Triangle Base Length

Go to Calculator

Base of Trapezoid : Find Missing Base (b1 or b2)

Go to Calculator