Teaching NVS Junior Secretariat Assistant (JSA) Mock Test 2024 Quantitative Aptitude Trigonometry Heights and Distances
From the top of a cliff 90 metre high, the angles of depression of the top and bottom of a tower are observed to be 30° and 60° respectively. The height of the tower is :
1
45 m
2
60 m
3
75 m
4
30 m