AAS Triangle Calculator
AAS Triangle: calculate results from explicit inputs, with a formula and worked example.
Formula
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Euclidean geometry. Use one consistent length unit; areas and volumes use its square and cube. Degenerate shapes are rejected. Very thin shapes may lose floating-point precision.
Example Calculation
- Angle A (opposite side a): 30 °
- Angle B: 60 °
- Side a: 5 units
A = 30°, B = 60° and a = 5 give b ≈ 8.6603, c = 10 and area ≈ 21.6506.
Method references
Frequently asked questions
How do I use this calculator?
Enter angle a (opposite side a), angle b, side a. The result updates automatically. Use Reset to restore the example values.
What method does it use?
C = 180°−A−B; b = a sin B / sin A; c = a sin C / sin A. Euclidean geometry. Use one consistent length unit; areas and volumes use its square and cube. Degenerate shapes are rejected. Very thin shapes may lose floating-point precision.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.