Angle Bisector Calculator
Result
Bisector length from C4.4096
Angle C81.7868°
Segment of c near a (= c·a/(a+b))3.3333
Segment of c near b (= c·b/(a+b))4.6667
Division ratio (a:b)5:7
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Angle Bisector Calculator — free online calculator.
Formula
t_c = √(ab[(a+b)²−c²]) / (a+b); bisector divides opposite side in ratio a:b
- Angle Bisector Calculator calculates its result from A, B, Ab, C. It uses the formula t_c = √(ab[(a+b)²−c²]) / (a+b); bisector divides opposite side in ratio a:b. Change any input to recalculate the result instantly.
- The main inputs are Side a, Side b, Side c. Enter them in the units and format shown in the calculator.
- Keep comparable quantities in compatible units whenever the formula combines or compares them.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Angle Bisector
Inputs
- Side a: 5
- Side b: 7
- Side c: 8 opposite to C
Using A = 2, B = 3, Ab = 4, C = 5, the calculated result is 0.
Sample result: Calculating…
Frequently asked questions
What does the Angle Bisector calculate?
Angle Bisector Calculator — free online calculator.
Which values should I enter?
Enter Side a, Side b, Side c using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: t_c = √(ab[(a+b)²−c²]) / (a+b); bisector divides opposite side in ratio a:b.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.