As per the given question,
angle of elevation =28∘
angle of depression from the same window to the bottom of the building =34∘
The height of the window from the bottom(h) =24 feet
Let height of the building from the level of window is h'
For the depression from the window,
Let the distance between the building is x,
So, tan34∘=xh
x=tan34∘24=35.58feet
Now, similarly,
For the above from the window,
tan28∘=xh′
⇒h′=xtan28∘feet
⇒h′=35.58×tan(28∘)=18.92feet
Hence total height of the building = h+h'
=24+18.92=42.92feet
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