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 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?

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 '1.5' 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]'

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 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 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 metres tall looks down from the top of a light house 25 metres high and sees a ship at an angle of depression 35^circ How far is the ship from the foot of the light house? Lets draw a figure first:

Two children of same height standing on either sides of a tower, looks the top of tower at an elevation of 40^circ , 55^circ . The distance between the children is 25 metres. Height of the chlidren is 1.5 metres. a) Draw a rough figure showing the givën measurements. b) Calculate the height of the tower. [sin 40^circ =0.64, sin 55^circ =0.82, cos 40^circ =0.77, cos 55^circ =0 .57, tan 40^circ =0.89, tan 55^circ =1.43]

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 ]