We are given
angle(Z)=30
Let's assume angle (Z) as reference angle
so, opposite=XY=4
adjacent=YZ
so, we can use tan formula
[tex] tan(Z)=\frac{XY}{YZ} [/tex]
now, we can plug values
[tex] tan(30)=\frac{4}{YZ} [/tex]
[tex] YZ=\frac{4}{tan(30)} [/tex]
[tex] YZ=4\sqrt{3} [/tex]...............Answer
