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Q.

The length of shadow of a tree is 16 m when the angle of elevation of the sun is 60°. What is the height of the tree?


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a

8m

b

16m

c

163m

d

163m  

answer is C.

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Detailed Solution

It is given that the length of shadow of a tree = 16 m,  angle of elevation of the sun=60.
According to the given data the figure has been drawn below.
Question ImageLet AB=be height of the tree and BC be it's shadow.
In ABC ,
tanθ= Perpendicular base  
tan60°=ABBC
h16=tan60°
 h=tan60°×16
h=163         tan60°=3
  Height of the tree is 163 m.
So the correct option is 3.
 
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