(Solved): 4. To determine the elevation of the top of chimney, surveying stations P and Q are occupied by a t ...

4. To determine the elevation of the top of chimney, surveying stations $$P$$ and $$Q$$ are occupied by a theodolite and the following observations are recorded: What is the elevation of the chimney knowing that the horizontal distance PQ is $$100\mathrm{m}$$ if the top of the chimney and stations $$\mathrm{P}$$ and $$\mathrm{Q}$$ in the same vertical plane.