# The angle of elevation of a cliff from a fixed point #A# is #theta#. After going up a distance of #'k' m# towards the top of the cliff, at an angle of #phi#, it is found that the angle of elevation is #alpha#. Find height of cliff in terms of #k#?

##### 1 Answer

#### Answer

#### Answer:

#### Explanation

#### Explanation:

Let CB be the cliff . From point A the angle of elevation of the peak C of the cliff is

DF and DE are perpendiculars drawn from D on CB and AB.

Now

Let

For

Now

For

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