Question

A 1.8 m tall girl stands at a distance of 4.6 m from lamp post and casts a 5.4 m long shadow on the ground . then the height of the lamp post is ______ m .​

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

3m is the ans

hope it helps

thank you

Answer 2

Answer:

answer is 10/3 m

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