Two poles of height a metres and `b` metres are `p` metres apart. Prove that the height of the point of intersection of the lines joining the top of each pole to the foot of the opposite pole is given by `(a b)/(a+b)` metres.

Two poles of height 'a' metres and 'b' meters are 'p' meters apart. Prove that the height of the point of intersection of the lines joining the top of each pole to the foot of the opposite pole is given by (ab)/(a+b) meters.

Two vertical poles of heights, 20 m and 80 m stand apart on a horizontal plane. The height (in m) of the point of intersection of the lines joining the top of each pole to the foot of the other, from this horizontal plane is

Two vertical poles of height 10 m and 40 m stand apart on a horizontal plane. The height (in meters) of the point of intersection of the line joining the top of intersection of the lines joining the top of each pole to the foot of the other, from this horizontal plane is

Two poles of height 7 metres and 12 stand on a plane ground . If the distance between their feet is 12 metre , the distance between their top will be

Two poles of heights 6 metres and 11 metres stand vertically on a plane ground.If the distance between their feet is 12 metres,find the distance between their tops.

Two poles are a metres apart and the height of one is double of the other.If from the middle point of the line joining their feet an observer finds the angular elevations of their tops to be complementary,then the height of the smaller is sqrt(2)a metres (b) (1)/(2sqrt(2)) metres (a)/(sqrt(2)) metres (d) 2a metres