Height and distance

6. The angle of elevation of the sun, when the length of the shadow of a tree 3 times the height of the tree, is:
A. 30º B. 45º
C. 60º D. 90º

Answer: Option A

Explanation:

 

Let AB be the tree and AC be its shadow.

Let ACB = .

 

Then, AC = 3         cot = 3
AB

= 30º.

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