Find the 3 average angles by computing D and R horiztonal angles. Compute your 3

Question

Find the 3 average angles by computing D and R horiztonal angles.

Compute your 3 average horizontal angles by computing D and R horizontal angles by horizontal circle FS minus horizontal BS then averaging the D and R angles. Convert the average horizontal angles to triangle interior angles if necessary. Height of target 4.89' Instrument 1 HI= 5.36ft Sighted station horizontal circle 2(D) 0*0'0" 2(R) 180*0'15" 3(D) 293*14'10" 3(R) 113*13'45" zenith circle 90*21'20" 269*38'20" 269*24'25” 90*35'10" slope Distance 45.55' 45.55' 61.305' 61.305² 5.23' TE Height of target 5.15' Instrument at 2 HI= 5.1ft Sighted station horizontal circle 1(D) 0*0'0" 1(R) 179*59'0" 3(D) 141*01'30" 3(R) 321*01'15" zenith circle 90*09'25” 269*49'40" 269*41'10" 90*18'30" S slope Distance 45.55' 45.55' 89.64' 89.645' 5.23² Height of target 5.15' Instrument at 3 HI= 5.45ft Sighted station horizontal circle 1(D) 0*0'O" 1(R) 180*00'0" 2(D) 207*50'05" 2(R) 27*49'55" = = zenith circle 89*54'35" 270*05'05" 269*59'20” 90*00'30" slope Distance 61.30' 61.30' 89.645' 89.645' = 5.23'

Explanation / Answer

First of all check the correction in zeinth circle value and horizontal corcle value and then calculate the average value of the angle in which the maximum value.

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