From the top of a building 15 meter high, one sees the top of another taller building at an angle of elevation of `70^circ` and bottom at an angle of depression of `40^circ`
a) Draw a rough figure and mark the measurements given.
b) Find the height of the taller building.
[ tan 70 = 2.747,tan40 = 0.839 ]

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]'

One sees the top of a tree on the bank of a river at an elevation of 70^circ from the other bank. Stepping 20 metres back, he sees the top. of the tree at an elevation of 55^circ . Height of the person is '1.4' metres. a) Draw a rough figure and mark the measurements. b) Find the height of the tree. c) Find the width of the river. '[tan 70=2.75 , tan 55=1.43]'

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 boy sees the top of a tówer with an angle of elevation. 60^circ . Stepping 20metres back, he sees the same top with an angle of elevation 30^circ . Draw a rough figure and calculate the height of the tower.

Two buildings of same height in a plane ground are 80 meters apart, A boy standing in between sees the top of the buildings at an elevation of 35^circ and 65^circ . a) Draw a rough figure. b) Find the distaince from each buildings to the boy. c) Find the height of büildings. '[sin 35=0.57, cos 35=0: 81, tan 35=0.70 , sin 65=0.90, cos 65 .=0.42, tan 65=2.14]'

A boy standing at one bank of a river sees the top of a tree on the other bank directly opposite to the boy at an elevation of 60^o . Stepping 40 metres back, he sees the top at an elevation of 30^o . Draw a rough figure and find the height of the tree.

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 boy saw the top of a building under construction at an elevation of 30^circ . The completed building was 12m higher and the boy saw its top, at an elevation of 60^circ from the same spot. a) Draw a rough figure based on the given details. b) What is the height of the building? c) What is the distance between the building and the boy?

A tower is built in a river of width 80 metres. One sees the top of the river at an elevation of 55^circ and 65^circ . from either banks of the river. a) Draw a figure using the given measurements. b) Find the height of tower c) Find the distances to either banks from the foot of the tower. [tan 55^circ =1.43 , tan 65^circ =2.14]

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?