Answer 9 On a certain air-photograph the images of three ground stations, P, Q and R, were identified. The following co-ordinates were measured and compared to the known ground co-ordinates. Position Photo co-ordinates Ground co-ordinates x (mm) у (mm) x (mE) y (mN) 399 001.0 398 926.5 P 9.1 87.2 382 092.6 2.8. 382 375.5 - 17.5 -6.4 R 57.5 382 458.9 399 136.8 Determine the ground co-ordinates for a point that has photo co- ordinates x = +18.6 mm, y = +60.1 mm.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Answer: 4°.
9 On a certain air-photograph the images of three ground stations,
P, Q and R, were identified. The following co-ordinates were
measured and compared to the known ground co-ordinates.
Ground co-ordinates
x (mE)
Position
Photo co-ordinates
x (mm)
y (mm)
y (mN)
382 092.6
382 375.5
382 458.9
399 001.0
398 926.5
399 136.8
9.1
87.2
-6.4
2.8
57.5
-17.5
Determine the ground co-ordinates for a point that has photo co-
ordinates x +18.6 mm, y = +60.1 mm.
Transcribed Image Text:Answer: 4°. 9 On a certain air-photograph the images of three ground stations, P, Q and R, were identified. The following co-ordinates were measured and compared to the known ground co-ordinates. Ground co-ordinates x (mE) Position Photo co-ordinates x (mm) y (mm) y (mN) 382 092.6 382 375.5 382 458.9 399 001.0 398 926.5 399 136.8 9.1 87.2 -6.4 2.8 57.5 -17.5 Determine the ground co-ordinates for a point that has photo co- ordinates x +18.6 mm, y = +60.1 mm.
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