A round balloon of radius r subtends an angle alpha at the eye of observer while the angle of elevation of its centre is beta prove that the height of the centre of balloon is r sin beta cosec alpha/2.
Playlist of chapter 9 (Applications of Trigonometry) 👇
• Chapter 9 Application of Trigonometry | Cl...
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Rs aggarwal Question
Rd sharma Question
Applications of trigonometry
Height and distances
Important question of ch9 maths class 10