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 α and β (α>β). The height of the tower is h unit. A possible distance (in the same unit) between the points is
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4
AB = h cotα
BC = h cotβ
AC = AB+ BC = h(cotα + cotβ)