From a point on a bridge across a river, the angles of depression of the banks on opposite sides of the river are 30∘ and 45∘, respectively. If the width of the river is 12 m , find the height at which the bridge is

From a point on a bridge across a river, the angles of depression of t

1.	From a point on a bridge across a river, the angles of depression of the banks on opposite sides of the river are 30∘ and 45∘, respectively. If the width of the river is 12 m , find the height at which the bridge is
Answer» 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 width of the river is 12 m , find the height at which the bridge is