Right Triangle Calculator (Trigonometry)
Calculate missing sides, angles, and area using SOH CAH TOA
Enter exactly two known values below. Leave the other fields blank.
Please enter exactly two valid values. Ensure angles are between 1° and 89°, and the hypotenuse is the longest side.
in meters, cm, etc.
in meters, cm, etc.
longest side
in degrees (°)
in degrees (°)
Calculation Results
Side a
-
Side b
-
Hypotenuse c
-
Angle α
-
Angle β
-
Area
-
Formula used: ...
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How to Use the Right Triangle Calculator
This tool uses the fundamental principles of trigonometry (SOH CAH TOA) and the Pythagorean theorem to solve right-angled triangles. Simply enter any two known values (e.g., one side and one angle, or two sides), and the calculator will instantly determine all missing sides, angles, and the total area.
Remember: In a right-angled triangle, the sum of angles α and β is always 90°, and the hypotenuse (Side c) is always the longest side, opposite the 90° right angle.