railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Trigonometry Heights and Distances
A balloon is hovering at a height of 200 m above. A man in a boat on a lake observes it at an elevation of 45°. 100 seconds later, he sees it at an angle of elevation of 30°. What is the speed of the boat?
1
2.2 m/s
2
1.8 m/s
3
1.5 m/s
4
2 m/s