The rate of increase of length of the shadow of a man 2 metres height, due to a lamp at 10 metres height, when he is moving away from it at the rate of 2m/sec, is

The angle of elevation of the sun when the shadow of a pole of height 9 metres is 3sqrt(3) metres long is

A point source of light along a straight road is at a height of 'a' metres. A boy 'b' metres in height is walking along the road. How fast is his shadow increasing if he is walking away from the light at the rate of 'c' metres per minute ?

A point source of light along a straight road is at a height of 'a' metres. A boy 'b' metres in height is walking along the road. How fast is his shadow increasing if he is walking away from the light at the rate of 'c' metres per minute ?

A man 180 cm tall walks at a rate of 2m/sec. away, from a source of light that is 9 m above the ground. How fast is the length of his shadow increasing when he is 3 m away from the base of light?

A man 180 cm tall walks at a rate of 2m/sec. away, from a source of light that is 9 m above the ground. How fast is the length of his shadow increasing when he is 3 m away from the base of light?

The length of a shadow of a tower 24 metres high is 20 metres.Under the same conditions,find the height of a same conditions,find the height of a tree,the length of whose shadow is 15 m.

An electric pole caste a shadow of length 20 metres at a time when a tree 6 metres high caste a shadow of length 8 metres.Find the height of the pole.

An electric pole caste a shadow of length 20 metres at a time when a tree 6 metres high caste a shadow of length 8 metres. Find the height of the pole.

Find the height of a pole if the length of its shadow is 20 metres if at the same time the the length of shadow of a 1 metre stick is 55cm

A man of height 150 cm walks at the rate of 75 cm//sec , towards a lighted lamp-post which is 450 cm high. When he is 360 cm away from the lamp-post , his shadow is shortening at the rate of