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CBSE Class 10 Answered

Q. 44. A LADER LEANING AGAINST A WALL IS INCLINED AT AN ANGLE ALPHA T OTHE HORIZONTAL ...THE TOP OF THE LADDER TOUCHES THE PARAPET.. ON MOVING ITS FEET "a" METRES AWAY FROM THE WALL, THE LADDER MAKES AN ANGLE BEETA TO THE HORIZONTAL AND ITS TOP NOW TOUCHES THE WINDOW. PROVE THAT THE DISTANCE OF THE PARAPET FROM THE WINDOW IS-------- a cot (alpha + beeta /2)
Asked by | 02 Mar, 2011, 06:48: PM
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Answered by | 03 Mar, 2011, 10:56: AM

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