Height and distance 10 years ago pooja 1 minute 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 & Explanation Answer: Option A Explanation: Let AB be the tree and AC be its shadow. Let ACB = . Then, AC = 3 cot = 3 AB = 30º.