Understanding from a point on a bridgeacross a river requires examining multiple perspectives and considerations. Example 7 - From a point on a bridgeacross a river - Examples - Teachoo. Transcript Example 7 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 bridge is at a height of 3 m from the banks, find the width of the river. From a point on a bridge across a river, the angles of depression of .... To solve this problem, we need to use some trigonometry.
The problem gives us the angles of depression and the height of the bridge above the river. We can use the tangent of the angles to find the distances from the point on the bridge to where the line of sight intersects each bank of the river. Use the trigonometric ratio i.e tangent formula tan θ = Opposite Side Adjacent Side to find the distance of the bridge from the banks on either side and add them to get the final answer. Step by step video, text & image solution for 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.
To find the width of the river when a point on a bridge has angles of depression of 30° and 60° to the banks, and the bridge is 4 m above the water, we can use trigonometry. Ncert class 10 maths chapter 9 example 7 | From a point on the bridge ....
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