Question
The angle of elevation of the top of a tower,
vertically erected in the middle of a paddy field, from two points on a horizontal line through the foot of the tower are given to be Ī± and Ī² (Ī±>Ī²). The height of the tower is h unit. A possible distance (in the same unit) between the points is 1.Ā Ā Ā h(cotĪ² ā cota) / cos(a + Ī²) 2.Ā Ā Ā h (cota ā cotĪ²) 3.Ā Ā Ā h (tanĪ² ā tana) / tana + tanĪ² 4.Ā Ā Ā h (cata + cotĪ²)Solution
The correct answer is D
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