1.  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.