The shadow of a tower is √3 times its height. The angle of elevation of the sun is:
Answer: A
Let the height be h. The shadow length is h√3.
\(\tan \theta = \frac{\text{height}}{\text{shadow}} = \frac{h}{h\sqrt{3}} = \frac{1}{\sqrt{3}}\).
The angle whose tangent is \(1/\sqrt{3}\) is 30°.