Question

When an observer at a distance of 12 m from a tree looks at the top of the tree, the angle of elevation is 60°. What is the height  of the tree?  `(sqrt 3 = 1.73)`

Answer 1

 

tan 60° = `"AB"/"BC"`

`sqrt 3 = "h"/12`

`therefore "h" = 12 sqrt 3` m

= 12 × 1.73 m

h = 20.76 m