Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Trigonometry
Right Triangle Calculator
Calculates the hypotenuse, area, perimeter, and angles of a right triangle from its two legs. Perfect for geometry homework, construction layout, and any design task involving perpendicular measurements.
Fill in the required fields to see your result.
Trigonometry
Law of Cosines Calculator
Finds the third side of a triangle when two sides and the included angle are known, using c = √(a² + b² − 2ab·cos(C)). Essential for solving oblique (non-right) triangles in surveying, navigation, structural engineering, and computer graphics.
Fill in the required fields to see your result.
Key differences
| Right Triangle Calculator | Law of Cosines Calculator | |
|---|---|---|
| Category | Trigonometry | Trigonometry |
| Inputs required | 3 | 3 |
| Result | Result (units) | Side C (units) |
| What it does | Calculates the hypotenuse, area, perimeter, and angles of a right triangle from its two legs. Perfect for geometry homework, construction layout, and any design task involving perpendicular measurements. | Finds the third side of a triangle when two sides and the included angle are known, using c = √(a² + b² − 2ab·cos(C)). Essential for solving oblique (non-right) triangles in surveying, navigation, structural engineering, and computer graphics. |