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1. From a point on a bridge across a river the angles of depression of the banks on opposite side of the river are 30 and 45 respectively,.if bridge is at the height of 30m from the banks ,find the width of the river. |
| Answer» 1. From a point on a bridge across a river the angles of depression of the banks on opposite side of the river are 30 and 45 respectively,.if bridge is at the height of 30m from the banks ,find the width of the river. | |