A boy standing at the edge of a canal sees the top of a tree at an elevation of '70^circ .' 35^0Stepping 10 metres back, he sees It at an elevation of '25^circ'. The boy is 1.5 metres tall. How wide is the canal and how tall is the tree?
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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 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 meters back, he sees the top at an elevation of 30^o . What is the width of the river?

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.

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.

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 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?

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?

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]'