NCERT Exercise 9.1 - Q13 - Some Applications of Trigonometry
Question: As observed from the top of a 75 m high lighthouse from sea-level, the angles of depression of two ships are 30° and 45°. If one ship is exactly behind the other on the same side of the lighthouse, find the distance between the two ships.
Answer: The distance between the two ships is 75(sqrt(3) — 1) m.
Full step-by-step NCERT solution with diagrams on Something by Zero.