CBSE Class 10 Maths (Basic) 2023 · Paper 430/6/1 · Question 32(a)

From a point on a bridge across a river, the angles of depression of the banks on opposite sides of the river are $30^{\circ }$ and $45^{\circ }$ respectively. If the bridge is at a height of $3$ m from the banks, find the width of the river. (Use $\sqrt{3}=1.73$)