The ratio of the length of a rod and its shadow is 1 : √3. The angle of elevation of the sum is
The ratio of the length of rod and its shadow = 1: √3
Let the angle of elevation of sun be θ
tan θ = P / B (P = perpendicular, B = base)
Here tan θ = 1: √3 =
tan θ = (by rationalizing the denominator)
θ = 30° (∵ tan 30° = )