Question

From two points A and B on the same side of a building, the angles of elevation of the top of the building are 30' and 60° respectively. If the height of the building is 10 m, find the distance between A and B, correct to two decimal places.
(2009)​

Answer 1

Answer:let C be the bottom of building.

let distance between A&B be 'x' and b/w B& C it be 'y'

height = 10m (given)

Step-by-step explanation:

tan60° = 10/y

√3 = 10/y => y = 10/√3

tan30° = 10/(x +y)

1/√3 = 10/(x+y)

x+y = 10√3 , (put value of y here)

x = 10√3 - (10/√3)

x = 20/√3 = 11.54m Answer

Answer 2

Rough kiya hai thik hai

Hope you can understand my rough handwriting.