Right Triangle Calculator

This tool solves a right triangle from any two pieces that are enough to fix it. Enter the two legs, or one leg with the hypotenuse, or one leg with the acute angle opposite it, and it returns the missing side, both acute angles in degrees, the area and the perimeter. Sides come from the Pythagorean theorem and the angles from the inverse tangent, so the numbers are exact to the precision shown. Angles are given in degrees and sides carry whatever unit you entered, since the ratios do not care which one that is.

Calculator Type

Give the two sides that meet at the right angle.

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Give one side next to the right angle and the long side opposite it.

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Give a leg and the acute angle opposite that leg, in degrees.

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