An emu which is 8 ft tall standing at the foot of a pillar which is 30 ft height. It walks away from the pillar. The shadow of the emu falls beyond emu. What is the relation between the length of the shadow and the distance from the emu to the pillar ?

A man 2 m high walks at a uniform speed of 5km/hr away from a lamp post 6 m high. Find the rate at which the length of his shadow increases?

A 1.5 m tall boy is looking at the top of a temple which is 30 meter in height from a point at certain distance. The angle of elevation from his eye to the top of the crown of the temple increases from 30^(@) to 60^(@) as he walks towards the temple. Find the distance he walked towards the temple.

A tower stands vertically on the ground. From a point which is 15 meter away from the foot of the tower, the angle of elevation of the top of the tower is 45^(@) . What is the height of the tower?

Two poles of equal heights are standing opposite to each other on either side of the road, which is 120 feet wide. From a point between them on the road, the angles of elevation of the top of the poles are 60^(@) and 30^(@) respectively. Find the height of the poles and the distances of the point from the poles.

A 6 -ft tall man finds that the angle of elevation of the top of a 24 -ft-high pillar and the angle of depression of its hase are complementary angles. The distance of the man (in metres) from the pillar is

A lamp is 50ftdot above the ground. A ball is dropped from the same height from a point 30ftdot away from the light pole. If ball falls a distance s=16 t^2ftdot in t second, then how fast is the shadow of the ball moving along the ground 1/2s later?

A lamp is 50ftdot above the ground. A ball is dropped from the same height from a point 30ftdot away from the light pole. If ball falls a distance s=16 t^2ftdot in t second, then how fast is the shadow of the ball moving along the ground 1/2s later?

A lamp of negligible height is placed on the ground l_1 away from a wall. A man l_2m tall is walking at a speed of (l_1)/(10)m//s from the lamp to the nearest point on the wall. When he is midway between the lamp and the wall, the rate of change in the length of this shadow on the wall is -(5l_2)/2m//s (b) -(2l_2)/5m//s -(l_2)/2m//s (d) -(l_2)/5m//s