document.write( "Question 884309: A cyclic quadrilateral ABCD AB=5cm,BC=4cm,CD=3cm,DA=6cm.find BD and angle B? \n" ); document.write( "
Algebra.Com's Answer #535965 by Edwin McCravy(20060)\"\" \"About 
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document.write( "Next we can use Ptolemy's theorem: \r\n" );
document.write( "The product of the two diagonals of a cyclic \r\n" );
document.write( "quadrilateral is equal to the sum of the \r\n" );
document.write( "products of opposite sides.\r\n" );
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document.write( "Edwin
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