sin λ
cos λ
tan λ
cot λ
B. cos λ
sin α = sin φ cosec δ
sin α = sin φ sec δ
sin α = cos φ sec δ
sin α = cos φ cosec δ
52 m
62 m
72 m
82 m
Opposite corners of a photograph
Nodal points of the camera lens
Corresponding points on the ground and photograph
Plumb points of stereo pair of photographs
A great circle passing through the place and the poles
A great circle whose plane is perpendicular to the axis of rotation and it also passes through the place
A semi-circle which passes through the place and is terminated at the poles
An arc of the great circle which passes through the place and is perpendicular to the equator
B = bH/f
B =f/bH
B = b/fH
B = H/bf
Is the period of time taken by the earth in making a complete rotation with reference to stars
Is slightly shorter than an ordinary solar day
Is divided into the conventional hours, minutes and seconds
All the above
1/3
1/2
3/4
5/4
Triangulation surveying
Astronomical surveying
Hydrographical surveying
Photogrammetric surveying
Latitudes north of the equator are taken as positive
Latitudes south of the equator are taken as negative
Longitudes east of Greenwich are taken as negative
Longitudes west of Greenwich are taken as positive
Rotate round the North Pole
Rotate round the celestial pole
Remain always above the horizon
Are seldom seen near the pole star
1000 km
800 km
600 km
500 km
h/H f tan θ
h/H f² tan θ
h/H f² sin θ
h/H f cos θ
Declination must be 0°
Declination must be 90°
Distance from the pole must be less than the latitude of the observer
Hour angle must be 180°
f sin θ
f cos θ
f tan θ
f sec θ
9 cos α
9 sin α
9 tan α
9 cot α
Westward from the first point of Libra
Eastward from the first point of Aeries
Westward from the first point of Aeries
Eastward from the first point of Libra
cos δ/cos λ
cos (90° - δ)/cos (90° - λ)
sin (90° - δ)/sin (90° - λ)
tan (90° + δ)/tan (90° + λ)
80°
70°
60°
40°
Horizon and equator
Zenith and pole
Equator and zenith
Pole and horizon
80°
70°
60°
50°
Eastward
Westward
Northward
Southward
4.4 mm
5.5 mm
6.5 mm
7.5 mm
h tan α/S
h tan β/S
h (tan α + tan β)/S
h (tan α - tan β)/S
Tension = (P - Ps)L/AE
Sag = L3w²/24P² where w is the weight of tape/m
Slope = (h²/2L) + (h4/8L3) where h is height difference of end supports
All the above
Eastward
Westward
Northward
Southward
Satellite station
Eccentric station
False station
Pivot station
sin H = tan φ . cot δ
cos H = tan φ . cot δ
tan H = tan φ . cot δ
None of these
The plane passing through the perspective centre of a stereo pair and a ground point, is known as basal plane
Each pair of image points on stereo pair have their own basal plane
Relative orientation means reconstructing the basal plane
All the above
The east point of the horizon
The west point of the horizon
The zenith point of the observer
All the above
Optical projection
Optical mechanism projection
Mechanical projection
All the above