91. Height of instrument method of levelling is
92. The slotted template method
93. When a star is between the pole and the horizon, the relationship between latitude (λ), zenith distance (z) and declination δ, is
94. The length of a parallel of λ latitude between two meridians is equal to difference in longitudes multiplied by
95. The hour angle of the heavenly body for Greenwich meridian equals the hour angle of the body for any other meridian + longitude:
96. Which of the following is not used in measuring perpendicular offsets ?
97. The nearest star is so far away from the earth that the directions to it from two diametrically opposite points on the earth differs less than
98. Right ascension of a heavenly body is its equatorial angular distance measured
99. $$\alpha $$ and $$\beta $$ are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being ‘S’ and ‘f’ respectively. Parallax displacement of the point due to relief, is
100. The method of surveying by triangulation was first introduced by the Dutchman Snell in
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