PROBLEM 3: The lines OA and OB, whose magnetic bearings are N39°25'W and N75°50'E are laid out in plane. What is the angle between the lines? ( respectively.

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PROBLEM 3: The lines OA and OB, whose magnetic bearings are N39°25'W and N75°50'E respectively,
are laid out in plane. What is the angle between the lines? (
PROBLEM 4: Assume the magnetic bearing of line AB read in 1878 was N26°15'E. The magnetic
declination at that time and place was 7°15'W. In 1984 the declination was 4°30'E. What is the needed
magnetic bearing in 1984?"
PROBLEM 5: For a given data from a survey, determine the following:
a. Latitude and departures (1
b. Linear error of closure
c. Error/Closure in latitude (
d. Error/Closure in departure (4
e. Direction of the side of error (
f. Precision of measurement made. (5
LINE
AB
BC
CD
DE
EF
FA
LENGTH
233.10
242.05
191.50
234.46
270.65
252.38
AZIMUTH FROM
NORTH
122°30'
85°15'
20°00'
333°35'
254°08'
213⁰00¹
LATITUDE
N (+)
S(-)
DEPARTURE
E(+)
W(-)
Transcribed Image Text:PROBLEM 3: The lines OA and OB, whose magnetic bearings are N39°25'W and N75°50'E respectively, are laid out in plane. What is the angle between the lines? ( PROBLEM 4: Assume the magnetic bearing of line AB read in 1878 was N26°15'E. The magnetic declination at that time and place was 7°15'W. In 1984 the declination was 4°30'E. What is the needed magnetic bearing in 1984?" PROBLEM 5: For a given data from a survey, determine the following: a. Latitude and departures (1 b. Linear error of closure c. Error/Closure in latitude ( d. Error/Closure in departure (4 e. Direction of the side of error ( f. Precision of measurement made. (5 LINE AB BC CD DE EF FA LENGTH 233.10 242.05 191.50 234.46 270.65 252.38 AZIMUTH FROM NORTH 122°30' 85°15' 20°00' 333°35' 254°08' 213⁰00¹ LATITUDE N (+) S(-) DEPARTURE E(+) W(-)
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