defence exam Indian Coast Guard Assistant Commandant (GD/CPL) 2025 Test Series Quantitative Aptitude Trigonometry
From an airplane above a straight road, the angles of depressions of two positions on opposite sides at a distance of 20 m apart are observed to be 30 degrees and 45 degrees. The height of the plane above the ground is:
1
10√3 m
2
10(√3 - 1) m
3
10(√3 + 1) m
4
20 m