There are two points, A and B, whose elevations above datum are h₁ = 1710 ft and hß = 1425 ft and whose images a and b on a vertical photograph have photo coordinates = 2.95 in., y₁ = 2.32 in., x = -1.64 in., and y = -2.66 in. The camera focal length was 152.4 mm and the flying height above datum 7650 ft. On the same photograph, an image c of a third point C' appears. Its elevation hc = 1455 ft and its photo coordinates are x = 3.20 in. and Yc = -2.66 in. Compute the horizontal angles in triangle ABC.
There are two points, A and B, whose elevations above datum are h₁ = 1710 ft and hß = 1425 ft and whose images a and b on a vertical photograph have photo coordinates = 2.95 in., y₁ = 2.32 in., x = -1.64 in., and y = -2.66 in. The camera focal length was 152.4 mm and the flying height above datum 7650 ft. On the same photograph, an image c of a third point C' appears. Its elevation hc = 1455 ft and its photo coordinates are x = 3.20 in. and Yc = -2.66 in. Compute the horizontal angles in triangle ABC.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![There are two points, A and B, whose elevations above datum are
h₁ = 1710 ft and hß = 1425 ft and whose images a and b on a vertical
photograph have photo coordinates a = 2.95 in., Ya = 2.32 in.,
x = -1.64 in., and y = −2.66 in. The camera focal length was
152.4 mm and the flying height above datum 7650 ft.
On the same photograph, an image c of a third point C appears. Its elevation
hc = 1455 ft and its photo coordinates are c = 3.20 in. and
Yc = -2.66 in. Compute the horizontal angles in triangle ABC.
Compute angle A.
Express your answer in degrees to six significant figures.
A =
7| ΑΣΦ | 11 | vec
Compute angle B.
Express your answer in degrees to six significant figures.
B =
OF
[V| ΑΣΦ
vec
?
?
0](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcf17e9c1-27a0-4cc7-81b0-3cccfc559396%2Fea1e8f51-5744-4183-8777-6c852d3ec8ad%2Fshhe37_processed.png&w=3840&q=75)
Transcribed Image Text:There are two points, A and B, whose elevations above datum are
h₁ = 1710 ft and hß = 1425 ft and whose images a and b on a vertical
photograph have photo coordinates a = 2.95 in., Ya = 2.32 in.,
x = -1.64 in., and y = −2.66 in. The camera focal length was
152.4 mm and the flying height above datum 7650 ft.
On the same photograph, an image c of a third point C appears. Its elevation
hc = 1455 ft and its photo coordinates are c = 3.20 in. and
Yc = -2.66 in. Compute the horizontal angles in triangle ABC.
Compute angle A.
Express your answer in degrees to six significant figures.
A =
7| ΑΣΦ | 11 | vec
Compute angle B.
Express your answer in degrees to six significant figures.
B =
OF
[V| ΑΣΦ
vec
?
?
0
![Compute angle C.
Express your answer in degrees to six significant figures.
C=
[Π| ΑΣΦ
Η
vec
-
?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcf17e9c1-27a0-4cc7-81b0-3cccfc559396%2Fea1e8f51-5744-4183-8777-6c852d3ec8ad%2Fxbalvd9_processed.png&w=3840&q=75)
Transcribed Image Text:Compute angle C.
Express your answer in degrees to six significant figures.
C=
[Π| ΑΣΦ
Η
vec
-
?
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