A round balloon of radius R subtend an angle `2alpha` at the eye of the observer, while the angle of elevation of it's centre is `2beta`, then the height of the centre of balloon is

A round balloon of radius 'r' subtends an angle alpha at the eye of the observer, while the angle of elevation of its centre is beta . Find the height of the centre of balloon.

A round balloon of radius r subtends an angle alpha at the eye of the observer while the angle of elevation of its centre is beta. Prove that the height of the centre of the balloon is r sin(beta)cos ec(alpha)/(2)

A round balloon of radius r subtends an angle alpha at the eye of the observer while the angle of elevation of its centre is beta Prove that the height of the centre of the balloon is r sin beta cos ec[(alpha)/(2)]

A round balloon of radius r subtends an angle at the eye of the observer while the angle of elevation of its centre is beta. Prove that the height of the centre of the balloon is r sin beta csc(alpha)/(2)

A spherical ballon of radius r subtends angle 60^(@) at the eye of an observer. If the angle of elevation of its centre is 60^(@) and h is the height of the centre of the ballon, then which one of the following is correct ?

A balloon of radius r subtends an angle alpha at the eyes of an observer and the center of balloon from the eye is beta . Find the height of the center of the balloon from the eye of observer .

A spherical balloon of radius r subtends an angle 'theta' at an observer's eye. The angle of elevation of centre of the balloon is phi . Prove that the height of the centre of the ball is rsinphi cosec""theta/2 .