Answer:
[tex]KL<JL<JK[/tex]
Step-by-step explanation:
In a triangle there's an specific relation between angles and sides.
Specifically, the greats an angle is, the greatest is its opposite side.
So, in this case [tex]45\° < 57\° < 78\°[/tex] by givens.
Now, the opposite side of each angle is
[tex]45\°:KL\\57\°:JL\\78\° : JK[/tex]
This means that the order of sides from shortest to longest is
[tex]KL<JL<JK[/tex]
Because the least angle has the shortest opposite side and the greatest angle has the longest opposite side.
