Right Triangle Calculator

Name: Right Triangle Calculator
Rating: 4.9 (1789 reviews)

Solve for missing sides and angles of a right triangle.

Calculator

Solve for

Side a

Side b

Hypotenuse c (if needed)

Result

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Pythagorean theorem: a² + b² = c². The 3-4-5 triangle (9+16=25) is used in construction to ensure right angles. In India, the Sulba Sutras (800–500 BCE) documented this theorem centuries before Pythagoras.