| Question | A man 1.5 meter tall is 30√3 meter away from a building. When he sees the top of building the angle of elevation is 30°. Find the height of the building? | |
| Type | multiple_choice | |
| Option | 31.5m | correct |
| Option | 30 m | incorrect |
| Option | 53.4m | incorrect |
| Option | 48 m | incorrect |
Let AD be the man and BE the building.
Now draw a line DC so that DC is perpendicular to BE.
Now, BC = AD = 1.5 m
And, DC = AB = 30√3 m
Now, Height of building, BE = BC + EC
= 1.5 + 30 = 31.5 m (Option A)
