Triangle Calculator
Solve a triangle (angles/sides) from known elements.
Input Data
A
B
C
Results
6
12
Solved sides/angles.
A=36.8699°, B=53.1301°, C=90°
Explanatory note about the result.
面積=6；A=36.8699°, B=53.1301°, C=90°
At a glance:Law of cosines: c² = a²+b²−2ab·cos(C); law of sines: a/sinA = b/sinB = c/sinC. Complements pythagorean and trigonometry.
Formula
c² = a² + b² − 2ab·cos(C).
a/sinA = b/sinB = c/sinC.
How to Use
- Enter the known elements.
- The tool returns the missing sides/angles.
Case Studies
a=3, b=4, C=90°
c=5.
FAQ
Right triangle?
Then C=90° and it reduces to the Pythagorean theorem.
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References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.