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36. A round balloon of radius 'r' subtends an angle "α " at the eye of the observer while the angle of elevation of its centre is “β ". Prove that the height of the centre of the balloon is rsinα .cosecβ /2 |
| Answer» 36. A round balloon of radius 'r' subtends an angle "α " at the eye of the observer while the angle of elevation of its centre is “β ". Prove that the height of the centre of the balloon is rsinα .cosecβ /2 | |