Question

>68m² 170m x height​

Answer 1

Answer:

Let θ be the unknown angle of elevation.

Let DF be the man and AB be the lamp post.

Considering the given figure.

tanθ

=

5.4

1.8

=

3.6

x

Hence

x=

5.4

(3.6).(1.8)

=1.2m

Hence

The height of the lamp post is

1.2m+1.8m

=3m