defence exam CISF Head Constable Ministerial (HCM) & ASI Steno Mock Test Series Quantitative Aptitude Trigonometry Heights and Distances
A ladder 10m long reaches a point 10m below the top of a vertical flagstaff. From foot of the ladder, the elevation of top of the flagstaff is 60°. What is the height of flagstaff ?
1
12 m
2
15 m
3
16 m
4
20 m