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March 26, 2015

# Homework Help: maths

Posted by anurag on Monday, January 9, 2012 at 1:31am.

a ladder rests against a wall at an angle alpha to the horizontal its foot is pulled away from the wall through a distance a so it slides at bita making an angle bita with the horizontal show that a upon b=cos alpha-cos bita upon sin bita-sin alpha?

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