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document.write( "Hi, \n" );
document.write( "30,60,90 triangle, legs are in ratio 1:2: \n" );
document.write( "AB short leg, AC twice as long as AB, BC would be *AB \n" );
document.write( "For example \n" );
document.write( "AB = 4 ⇒AC = 8 and BC would be *4