An online right triangle calculator is a program that calculates the unknown side lengths or angle measurements. It uses the known side length and angle measurements for its calculations.
Most right triangle calculators utilize the Pythagorean theorem, a² + b² = c² where a and b represent the shorter side lengths and c represents the hypotenuse, to calculate an unknown side length. These calculators can also use the trigonometric functions (sine, cosine, and tangent) to solve for side lengths and angle measurements.
A right triangle is said to be completely solved when all side lengths, angle measurements, the area and the perimeter are known.