Question

To determine distance across a river, a point A on the near side was taken and a
perpendicular was set tone side of the chain line. A point C on the chain line behind A
was located and a point D was chosen on the perpendicular such that ∟CDB is a right
angle, B being a point in continuation of the chain line OA on the far side of river. If
AC = 61.85 m and AD = 93.8 m, find the length AB

Answer 1

Answer:

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Explanation:

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