[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
Using Trigonometry :
[tex]\\ \rm\Rrightarrow tan\theta=\dfrac{Perpendicular}{Base}[/tex]
[tex]\\ \rm\Rrightarrow tany=\dfrac{JL}{KL}[/tex]
[tex]\\ \rm\Rrightarrow tany=\dfrac{20}{21}[/tex]
