Principal of Tacheometry

 

Principle of Tacheometry

The principle of techeometry is based on the property of the isosceles triangle.

Statement :-

• In isosceles triangle the ratio of the perpendiculars from the vertex on their bases.

In the figure, let two rays OA and OB be equally inclined to central ray OC. Let A₂B₂, A₁B₁ and AB be the staff intercepts. Evidently,

 

= constant k = (1/2) cot (β/2)

This constant k entirely depends upon the magnitude of the angle β