Triangle Angles from Side Lengths
Find all three angles opposite side lengths wey you enter.
Your numbers
Angle for vertex A
Use consistent units. Result follow the assumptions wey you enter.
Compare scenarios
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Formula
A=acos((b²+c²−a²)/(2bc)); use di same method for B and C.
Find all three angles opposite side lengths wey you enter.
Example wey show the calculation
- Length of side a
- 3
- Length of side b
- 4
- Length of side c
- 5
- Angle for vertex A
- 36.8698976458 °
- Angle for vertex B
- 53.1301023542 °
- Angle for C
- 90 °
Where e fit work and limits
Use consistent units. Result follow the assumptions wey you enter.
We check inputs for missing values and allowed ranges. Result wey pass the finite numeric range no go show. Rounding affect wetin display, while calculation use the model numeric precision.
Check your units and assumptions before you rely on result. Changing label no convert currency or physical unit.
Version of di formula: e3d29fba1e05 · Example don get check: