Step-by-step explanation:
Let Īø be the angle of depression i.e the angle between the horizontal and the observer's line of sight.
tanĪø= (Height of the light house)/(Horizontal distance of ship from the base of light house)
ā“tanĪø=88/1532=0.0574
ā“Īø=tanā1(0.0574)=3.290(2dp)