EXAMIANS
In a spherical triangle ABC, right angled at C, sin b equals
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To obtain photographs of an area of 1000 m average elevation, on scale 1 : 30,000, with a camera of 30 cm focal length, the flying height is
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The latitude of a place was obtained by subtracting the zenith distance of a star from its declination, the observed star was between
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The parallax equation Δp = BmΔh/H - h is applicable to entire overlap of the photographs only if parallax is measured
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Agate cap is fitted with a
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A metallic tape is made of
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Assuming human normal vision distance 25 cm, smallest measurable angle 20", and intraocular distance 6.5 cm, the smallest depth to be discerned is
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Triangulation surveys are carried out for providing
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If the horizontal distance between the staff point and the point of observation is d, then the error due to curvature of earth is proportional to
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The longitudes of two places at latitude 60° N are 93° E and 97° W. Their departure is
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