From a point on a bridge across the river, the angles of depression of the banks on opposite sides of the river are 30° and 45° respectively. If the bridge is at a height of 2.5m from the banks, then the width of the river is (take √3 = 1.732)
The Ryotwari system was introduced by Sir Thomas Munro and Captain Alexander Read in 1820.This system was in operation for nearly 30 years and had many features of revenue system of the Mughals, Under the Ryotwari System every registered holder of land is recognised as its proprietor and pays direct to Government
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