A projectile is launched at an angle ‘α’ with the horizontal with a velocity 20 ms–1. After10 s, its inclination with horizontal is ‘β’. The value of tanβ will be (g = 10 ms–2).
1
tan α + 5 sec α
2
tan α – 5 sec α
3
2 tan α – 5 sec α
4
2 tan α + 5 sec α