Right Triangle Calculator
Solve a right triangle from any two sides.
Hypotenuse (c = √(a² + b²))
5
Area
6
Perimeter
12
Angle A
36.8699°
Angle B
53.1301°
Pythagorean theorem: a² + b² = c². Angles A and B are opposite sides a and b. The right angle is always 90°.
About
The Pythagorean theorem in action. Enter the two legs and read the hypotenuse, the area, the perimeter, and both non-right angles. Useful for ramps, roofs, screens, and any problem with a 90-degree angle in it.
How to use
- Enter side a.
- Enter side b.
- Read hypotenuse, angles, area, perimeter.
FAQ
How are the angles calculated?+
From the arctangent of the side ratios. Angle A (opposite side a) = arctan(a/b). Angle B = 90° minus A.