A 15-meter high tower casts a shadow 24 meters long at a certain time and at the same time, a telephone pole casts a shadow 16 meters long. Find the height of the telephone pole.
Answer : [10 m]
Let BC = 15 m, AB = 24 m in ABC and
A = Q
Again let DE = 16m and EDF = Q in
DEF
In ABC and
DEF
We know that if two angles of one triangle are equal to the two angles of another triangle, then the two triangles are similar by the AA similarity criterion.
Hence the height of the point on the wall where the top of the laden reaches is 10 m.