Right Triangle Calculator (Pythagoras)
This calculator computes the right triangle (Pythagoras): exact formula c = √(a²+b²), worked example legs 3, 4 → c = 5, angles 36.87° / 53.13°.
- Free, instant, any units.
Figures are estimates from this calculator’s standard formula — adjust the inputs in the tool below for your exact number.
How the right triangle (Pythagoras) Calculator Works
The calculator applies the exact formula c = √(a² + b²), angles via arcsin/arctan. Worked example: legs 3, 4 → c = 5, angles 36.87° / 53.13°. Keep every input in one unit system and the result follows in length units (m, ft, cm); full precision is kept until the final rounding. Angles in radians pair with s = rθ; convert degrees with × π/180.
- 1
Enter the measurements
Type the values required by the formula for right triangle (Pythagoras).
- 2
Check the units
One unit system throughout — cm, m, ft or in.
- 3
Read the result
The calculator substitutes, evaluates and rounds only at the end.
Use Cases
Fabrication and layout work
Wire, trim and route length planning
Design and homework verification
Tips
- 1
Keep angles in radians for s = rθ formulas
- 2
1 rad = 57.2958°; degrees × π/180 = radians
- 3
Unroll curved paths into straight segments to sanity-check
Common Mistakes
Degrees entered where radians are required
Using the chord length as the arc length
Rounding π too early in chain calculations
FAQs
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