Trigonometry

Right Triangle Solver

Enter the two legs of a right triangle. The solver finds the hypotenuse with the Pythagorean theorem, the two acute angles with the arctangent, and the area as half the product of the legs. Angle A is opposite leg a and angle B is opposite leg b.

Right Triangle Solver

Solve a right triangle from its two legs.

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Frequently asked questions

How are the angles found?

Angle A is arctan(a/b) and angle B is its complement, so A + B = 90°.

What if I only know one leg and the hypotenuse?

Use the Pythagorean theorem solver to find the missing leg first, then return here.

In what units are the angles?

The acute angles are reported in degrees.