Choose the rule a triangle problem needs
Consider triangle \(LMN\) with the available measurements listed below
Side \(l\) is segment \(MN\) opposite angle \(L\); side \(m\) is segment \(LN\) opposite angle \(M\); side \(n\) is segment \(LM\) opposite angle \(N\). Each angle is at the vertex with the same capital letter
Side \(m\) (\(LN\)) is 156 m
Angle \(L\) at vertex \(L\) is \(36^{\circ}\)
Angle \(M\) at vertex \(M\) is \(87^{\circ}\)
The required quantity is the length of side \(l\) (\(MN\))