a Civil Engineer walked 60 m on a level towards the cliff.

[Stein]

Application of Double Angles (Addition Formulas): Having a certain unknown distance measured and the angle of elevation of the cliff a Civil Engineer walked 60 m on a level towards the cliff. The angle of elevation from this second station was the compliment of former angle. The Civil Engineer then walks 20 m nearer the cliff, on the same line and found the angle of elevation from the third station to be doubled the first angle. How high is the cliff?
Answer: 74.16 m

Please help me!!! I need a detailed solution to this problem. Thanks

 

[Deleted member 4993]

Having a certain unknown distance measured and the angle of elevation of the cliff a Civil Engineer walked 60 m on a level towards the cliff. The angle of elevation from this second station was the compliment of former angle. The Civil Engineer then walks 20 m nearer the cliff, on the same line and found the angle of elevation from the third station to be doubled the first angle. How high is the cliff?
Answer: 74.16 m

Please help me!!! I need a detailed solution to this problem. Thanks

You have posted five problems without showing a line of work!

To start off, start with drawing a sketch.

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[Stein]

Mr. Khan would you mind helping me again with this problem? I can't picture out the drawing itself. im so confused. please help me. thanks in advance.

 

[stapel]

I can't picture out the drawing itself.

This one works similarly to your other post here.