state gov AP Police SI (Pre+Mains) Mock Test 2022 Quantitative Aptitude Trigonometry Heights and Distances
From the top of the light house a man sees a boat at a distance of 9 m from light house making an angle of 60° with the top of the light house. The boat is sailing against the light house and after 3 seconds its make an angle of elevation of 45° with the top of the light house. Find the speed of the boat.
1
2(√3 – 1)m/s
2
3(√3 – 1)m/s
3
9(√3 – 1)m/s
4
(√3 – 1)m/s