The following tacheometric observations were made from station A to stations 1 and 2. The height of the instrument above the ground was 1.52 m. Take stadia interval factor and constant as 100 and 0,...

The following tacheometric observations were made from station A to stations 1 and 2.

The height of the instrument above the ground was 1.52 m. Take stadia interval factor and constant as 100 and 0, respectively. If the staff was inclined by 1° to the vertical, solve for the following:
a. Error in horizontal distance if the staff is inclined towards the
instrument for the line A-1.
b. Error in the vertical distance if the staff is inclined away from the
instrument for the line A-2.
c. If the elevation of point 1 is 115.673 m, determine the correct
elevation of point 2.

Extracted text: INSTRUMENT STAFF AT ZENITH ANGLE STAFF READING AT STATION Upper Middle Lower 1 96°55' 1.388 0.899 0.409 A. 2 122°18' 1.665 1.350 1.032