question_answer

A person standing on the top of a light house of height 300 m above sea level observes that the angle of depression of a ship sailing directly towards it changes from \[30{}^\circ \] to \[45{}^\circ \]. The distance travelled by the ship during this period is:\[[Take\sqrt{3}=1.73]\]

A)  146 m             

B)  219 m

C)  73 m                           

D)  200 m

E)  None of these