A boy is standing between two building of equal height. The boy and the buildings are in a straight line. He see the tops of those buildings at elevations of `45^o` and `30^o`. The nearest building is 20 metres away from him. Draw a rough figure.

A boy is standing between two building of equal height. The boy and the buildings are in a straight line. He see the tops of those buildings at elevations of 45^o and 30^o . The nearest building is 20 metres away from him. Find the height of the buildings and distance between the buildings.

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 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?

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]

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 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 .Draw a rough figure based on the above facts.

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.

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 boy standing at the edge of a canal sees the top of a tree on the other edge at an elevation of 60^o . Stepping 12 metres back, he sees it at an elevation of 30^o . Find the height of the tree.

A flagpole stands on a building of height 450 ft and an observer on a level ground is 300 ft from the base of the building .The angle of elevation of the bottom of the flagpole is 30^(@) and the height of the flagpole is 50 ft . If theta is the angle of elevation of the top of the flagpole , then tan theta is equal to