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?

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 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:

A man observed the top of a tower at a distance a from its base at an angle of elevation 30^circ . He saw the top of a tower at an angle of elevation 60^circ from a point at the distance b from the base, Prove that the height of the tower h=sqrtab

A man observed the top of a tower at a distance a from its base at an angle of elevation 60^@ . He saw the top of the tower at an angle of elevation 30^@ from a point at the distance b from the base.Prove that height of the tower h= sqrt(ab)

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 '1.2' metres tall stands 1 metre away from the foot of a lamp post. If the length of his shadow is '1.5' metres, what is the height of the lamp post?

Why does water from the soil rise to the top of a tall tree ?

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 viewed the top of a tree at anangle of elevation 30^@ . He moved 10 m towards the tree and saw the top of the tree ant the angle 60^@ Find the height of the tree.