The angle of elevation of the top of a building and the top of the chimney on the roof of the building from a point on the ground are x° and 45° respectively. The height of building is h metre. Then the height of the chimney (in metre) is :

The angle of elevation of the top of a building and the top of the chi

1.	The angle of elevation of the top of a building and the top of the chimney on the roof of the building from a point on the ground are x° and 45° respectively. The height of building is h metre. Then the height of the chimney (in metre) is :
A.	h cot x + h
B.	h cot x – h
C.	h tan x – h
D.	h tan x + h
Answer» C. h tan x – h

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The angle of elevation of the top of a building and the top of the chimney on the roof of the building from a point on the ground are x° and 45° respectively. The height of building is h metre. Then the height of the chimney (in metre) is :

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