Find the distance of a heavenly object from the earth if the parallactic angle as measured from two places at a distance of `6.284xx10^(6)m` apart is

Find the distance of a heavenly object from the earth if the parallactic angle as measured from two places at a distance of `6.284xx10^(6)m` apart is
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Find the distance of a heavenly object from the earth if the parallactic angle as measured from two places at a ... .284xx10^(6)m` apart is `2^(@)`.
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The cross-sections for a highway is taken at (A) Right angle to the centre line (B) 30 metres apart (C) Intermediate points having abrupt change in gradient (D) All the above

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The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is (A) 51.5 (B) 52.5 (C) 53.5 (D) 54.5

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