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Surveying

Surveying
In a spherical triangle ABC, right angled at C, sin b equals

sin a cos A
cos a sin A
cot A tan a
tan a cot A

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Surveying
The net ground area of a vertical photograph 20 cm × 20 cm on scale 1 : 10,000 having overlaps 60% and 30%, is

0.50 sq km
0.64 sq km
0.60 sq km
0.56 sq km

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Surveying
The zenith is the point on the celestial sphere

East of observer
South of observer
West of observer
North of observer

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Surveying
Pick up the incorrect statement from the following. High oblique photographs

May not include the image of the horizon
May have tilt up to 30°
None of these
May include the image of the horizon

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Surveying
The height displacement on a vertical photograph

Decreases as the flying height increases
All listed here
Increases as the horizontal distance increases from the principal point
Increases as the ground elevation increases

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Surveying
The great circle which passes through the zenith, nadir and the poles, is known as

Meridian
None of these
Vertical circle
Prime vertical

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