6) Calculate the internal horizontal angles a, b, and c as shown in Figure 1 and present them in DMS, Decimal Degrees, and Radians.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
Solve only q6
Table 1: Coordinate Values
A
B
C
7524800
7524780
7524760
7524740
7524720
7524700
7524680
7524660
7524640
B
2571590
C
b
N (m)
7524785.964
7524660.418
7524768.416
2571600
C
E (m)
2571648.112
2571594.148
2571603.989
Coordinate Sketch
2571610
2571620 2571630
a
2571640
Figure 1: Coordinate Sketch
A
2571650
H (m)
21.455
53.798
39.671
2571660
Transcribed Image Text:Table 1: Coordinate Values A B C 7524800 7524780 7524760 7524740 7524720 7524700 7524680 7524660 7524640 B 2571590 C b N (m) 7524785.964 7524660.418 7524768.416 2571600 C E (m) 2571648.112 2571594.148 2571603.989 Coordinate Sketch 2571610 2571620 2571630 a 2571640 Figure 1: Coordinate Sketch A 2571650 H (m) 21.455 53.798 39.671 2571660
Using the coordinates for points A, B, and C provided in Table 1 and plotted in Figure 1, answer
the following questions:
1) What type of coordinate system is being used here? Be as specific as possible.
2) Compare and contrast 3D and 1+2D coordinate systems. Is there any way to distinguish
which type these are (3D or 1+2D) with the information provided?
3) Explain the concept of the planar approximation. Can we safely make use of the planar
approximation in this case? Validate your answer with numerical proof.
4) Calculate the following azimuths and present them in DMS (rounded to the nearest
arcsecond):
X BA; a BC, aAC, O CA
5) Calculate the following slope distances (hint: the distance equation shown in lecture
slides is for the 2D case!):
SAB SBC SCA
6) Calculate the internal horizontal angles a, b, and c as shown in Figure I and present
them in DMS Decimal Degrees, and Radians.
Transcribed Image Text:Using the coordinates for points A, B, and C provided in Table 1 and plotted in Figure 1, answer the following questions: 1) What type of coordinate system is being used here? Be as specific as possible. 2) Compare and contrast 3D and 1+2D coordinate systems. Is there any way to distinguish which type these are (3D or 1+2D) with the information provided? 3) Explain the concept of the planar approximation. Can we safely make use of the planar approximation in this case? Validate your answer with numerical proof. 4) Calculate the following azimuths and present them in DMS (rounded to the nearest arcsecond): X BA; a BC, aAC, O CA 5) Calculate the following slope distances (hint: the distance equation shown in lecture slides is for the 2D case!): SAB SBC SCA 6) Calculate the internal horizontal angles a, b, and c as shown in Figure I and present them in DMS Decimal Degrees, and Radians.
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