The angle of elevation of the top of a tower from a point on the ground, which is 30m away from the foot of the tower is 30∘. Find the height of the tower.
10√3
Angle of elevation=θ=30∘
⇒tanθ=PerpendicularBase
⇒tanθ=h30
⇒tan30∘=1√3
⇒h30=1√3
∴h=10√3m.