Math Calculators

Law of Sines Calculator

Find the remaining side lengths and angle of a triangle using the Law of Sines, with independent unit choices for the known side and each resulting side.

Angle C —

Side b —

Side c —

About the Law of Sines Calculator

The Law of Sines relates the sides of any triangle to the sines of their opposite angles, letting you solve a triangle when you know one side and two angles (AAS or ASA). Side a and the two resulting sides each have their own unit selector, so you can mix units freely.

Formula: a / sin(A) = b / sin(B) = c / sin(C)