A man `1.8` metre tall standing a the top of a telephonetower,
saw the top of a 10 m high building at a depression of `40^circ`
and the base of the building at a depression of `60^circ`. What is
the height of the tower? How far is it from the building?

On the top of a 60 metre high building sees the top and bottom of a tower at a depression of 30^circ and 60^circ . What is the height of the tower?

A man, standing at the foot of a tower, sees the top of a building 20 metres away at an elevation of 60^o . Climbing to the top of the tower, he sees it at an elevation of 45^o .What is the height of the building?

A boy standing on the top of a tower 20 metrés height, saw the top of a building at an elevation of 50^circ and its base at a depression of 30^circ a) Draw a rough figure. according to the given data. b) find the distance between the tower and the building. c) find the distance from the top of the tower to the base of the building. d) find the height of the building. [sin 50^circ =0.77, cos 50^circ =0.64, tan 50^circ =1.2, 'sqrt3 =1.7]

A child stands 30 metres away from the foot of a telephone tower, sees the top of the tower at an angle of elevation 30^circ . Stepping some distance towards the tower, sees it at an elevation of 45^circ a) What is the height of the tower? b) How much distance did he walk?

A '1.75' metre tall man, standing at the foot of a tower, sees the top of a hill 40 metres away at an elevation of ' 60^o Climbing to the top of the tower, he sees it at an elevation of 50^o . Calculate the heights of the tower and the hill.

A man, standing at the foot of a tower, sees the top of a building 20 metres away at an elevation of 60^o . Climbing to the top of the tower, he sees it at an elevation of 45^o .Calculate the height of the tower. (Take sqrt3=1.73 )

One sees a boat in the sea, on the top of a light house at a depression of 20^circ . After sometimes he sees the boat at a depression of 30^circ . If the height of the lighthouse is 160 meter. What distance will the boat travel during this time? [tan 20=0.3640 , tan 30=0.5774]

A '1.5' metre tall boy saw the top. of a building under construction at an elevation of 30^circ .The completed building was 10 metres higher and the boy sáw its top at an elevation of 60^circ from the same spot. What is the height of the büilding?

Two buildings in a plane ground are 20 metres apart. From the top of the smaller building, one sees the base of the building at a depression of 50^circ and its top at an elevation of 25^circ . a) Draw a rough figure and mark the measurements. b) Find the helght of the smaller building. c) Find the height of the bigger building. '[tan 50^circ=1.2, tan 25^circ=0.4]'

A man 1.7 metres tall stands 10 metres away from the foot of a tree, and he sees the top of the tree at an angle of elevation 40^circ . How tall is the tree?