Geometry method
The solution combines the Pythagorean theorem with sine, cosine, and tangent relationships, depending on the two known values.
Right Triangle Calculator
Solve a right triangle from two independent sides or from one side and an acute angle, with explicit validation for impossible and insufficient inputs.
Part of Workshop Calc ↗Ready to calculate
Enter the dimensions, then calculate to see a checkable result.
Estimate only:Verify layout and machining dimensions against the drawing and measurement setup.
02 / Method & limits
Make the calculation checkable.
Example
Legs of 3 and 4 produce a hypotenuse of 5 and acute angles of about 36.87° and 53.13°.
Limits & checks
- Inputs must uniquely define a right triangle.
- Angles and lengths must remain within valid geometric ranges.
Sources & review
Last reviewed: 2026-07-19