other govt exam NBE Junior Assistant 2024 Mock Tests Series Mathematics Trigonometry Heights and Distances
A man wishes to find the height of the building which stands on a horizontal plane. At a point on the plane, he finds the angle of elevation of the top of the building to be 60° and moving 10 m along the same line away from the building he finds the angle of elevation to be 30°. What is the height of the building?
1
3√3
2
5√3
3
10√3
4
12√3