Categories > trigonometry > Height and Distance > A vertical pole (more than 100 m high) consists of two portions, the lower being one-third of the whole. If the upper portion subtends an angle ${{\tan }^{-1}}\frac{1}{2}$ at a point in a horizontal plane through the foot of the pole and distance 40 ft from it, then the height of the pole is

trigonometry

Question: A vertical pole (more than 100 m high) consists of two portions, the lower being one-third of the whole. If the upper portion subtends an angle ${{\tan }^{-1}}\frac{1}{2}$ at a point in a horizontal plane through the foot of the pole and distance 40 ft from it, then the height of the pole is


1) 100 ft
2) 120 ft
3) 150 ft
4) None of these
Solution: Explanation: No Explanation
Height and Distance

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