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Surveying

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

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

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Surveying
The adjustment of horizontal cross hair is required particularly when the instrument is used for

All of these
measurement of horizontal angles
leveling
prolonging a straight line

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Surveying
The type of surveying which requires least office work is

tacheomefry
trigonometrical levelling
plane table surveying
theodolite surveying

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Surveying
The process of turning the telescope about the vertical axis in horizontal plane is known as

transiting
swinging
plunging
reversing

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Surveying
If α, H, A and δ be the altitude, hour angle, azimuth and declination of a circumpolar star at its elongation, in latitude λ, the following relation holds good

sin A = cos δ/cos λ
cos H = tan λ/tan δ
All listed here
sin α = sin λ/sin δ

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Surveying
The equation which is obtained by multiplying each equation by the coefficient of its unknowns and by adding the equations thus formed, is known as

Conditional equation
Normal equation
None of these
Observation equation

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