Law of tangents for the triangles


The law of tangents is a statement about the relationship between the tangents of two angles of a triangle and the lengths of the opposing sides.The law of tangents can be used to find a side or an angle when you know two sides and an angle or two angles and a side of a triangle.

Related formulas


aSide of the triangle (m)
bSide of the triangle (m)
AAngle of the triangle (opposite to side a) (degree)
BAngle of the triangle (opposite to side b) (degree)