engineering recuitment ICAR (IARI) Assistant (Pre + Mains) 2022 Mock Test Quantitative Aptitude Trigonometry Heights and Distances
The angle of elevation of a Helicopter from a point 40 m above a lake is 30° and the angle of depression of the reflection of helicopter in the lake is 60°. What will be the height of the helicopter from lake?
1
70 m
2
60 m
3
80 m
4
90 m