TRIANGLE CALCULATOR

Find the immediate answers for your construction projects (roof calculations, step hand rails, etc.) in engineering, at school, etc...

This triangle solver as a trigonometry calculator applies the trigonometric functions of Heron's formula, The Law of Cosines and Sines and the Pythagorean Theorem. It's triangular calculation engine will also calculate the triangle if you only know two altitudes + an angle or side.
In case of SSA or other scenarios with insufficient data for congruence, the trigonometry calculator will present a second solution if available.
Impossible, insufficient or conflicting data will be answered with an error.


SSS (side, side, side)

ASA (side, angle, side) two interior angles and the included side

SSA (side, side, angle) If the angle given is opposite to the longer
side of the two sides, then the triangles are congruent.
If the angle given is opposite to the shorter side the trigonometry calculator will provide a second solution (press the button CALC 2nd).

AAS two angles and a corresponding (non-included) side

Various combinations with altitudes and an angle or side

Triangle Calculator is a trigonometry calculator which solves all types of triangles.
Those are mostly classified according to their internal angles.