Help me with this i tried it 4 times

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

An observer(o) spots a plane(p) taking off from a local airport and flying at a 29 degree angle horizontal to her line of sight and located directly above a tower(t). the observer also notices a bird circling directly above her. if the distance from the plane(p) to the tower(t) is 6,000ft., how far is the bird(b) from the plane(p).