Calculate any side of a right triangle using the Pythagoras theorem.
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About Pythagoras Theorem

In a right-angled triangle, the square of the hypotenuse (c) equals the sum of the squares of the other two sides (a and b).

How It Works

Enter two known sides of the triangle. Leave the unknown side blank. The calculator will compute the missing side using the formula: c² = a² + b² or a² = c² - b².

Tips

Ensure that the hypotenuse is the longest side. Only numeric values are accepted.

FAQs

Can I calculate all sides at once? No, one side must be unknown.
What if input is invalid? You will get an alert to correct the inputs.