The upper ( 3 4 ) th portion of a vertical pole subtends an angle ^ -1 ( 3 5 ) at a point…
Mathematics · JEE Main · NTA Exams — Trigonometry
The upper \(\left(\frac{3}{4}\right) \text { th }\)portion of a vertical pole subtends an angle \(\tan ^{-1}\left(\frac{3}{5}\right)\) at a point in the horizontal plane through its foot and at a distance 40m from the foot. A possible height of the vertical pole is
- 20 m
- 40 m
- 60 m
- 80 m
Answer
(B) 40 m
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