1.) From the top of a lighthouse

Question

52 metres high,the angles of depression of two ships due north of it are 42 and 37. How far apart are the ships ?

Answer 1

distance of closer ship = 57 - tan42 = 63.3 m
distance of farther ship from lighthouse = 57/tan 37 = 75.6 m

so distance between 2 ships = 75.6-63.3 = 12.3 m

The ships re 63 and 75 m away from the lighthouse ????
TOTALLY UNREALISTIC QUESTION !