railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Trigonometry Heights and Distances
A tower subtends an angle α at a point A in the plane of its base and the angle of depression of the foot of the tower at a point ‘b’ metres above A is β, then the height of the tower is:
1
b tan α tan β
2
b cot α cos β
3
b tan α cos β
4
b tan α cot β