No. 2. Measurment of three horizontal angles; about a point P are: APB = 12°31'50", BPC = 37°29'20", and CPD = 47°36'30". If the measurement of the single angle APD is 97037'00", determine the most probable values of the angles. %3D %3D CA C2

4. An instrument is set over point "A" with a 5.45 ft. H.I. A vertical angle of -9°35'17" and a slope distance of 253.86 ft. were taken to a rod 5.17 ft. above point "B". The elevation of point “B" is 272.10 ft. What is the elevation of point “A"? (Draw a sketch to support your answer).

Please answer ?

The following Staff reading were taken on loop leveling where the reading in brackets are foresights 1.26, 0.82, (1.79), 2.24, (1.25), X, -1.38, (1.42), 0.03, (1.19), 1.35, (2.37). Find the missing value X and the elevations for all points assuming that the elevation for point 1 is 721 m. (do all necessary checks) • The following table shows the ground elevations for stations on a longitudinal profile. Using a suitable scale, draw a longitudinal profile showing the tabular values for the ground Station 0 20 40 60 80 100 120 140 Ground 97.41 98.44 97.45 98.27 97.84 98.36 98.40 98.60 Level Find the slope between station 20 and 70m