document.write( "Question 824448: In a ΔABC, angle B = 90 degrees, AB = 6 units and AC = 10 units then the length of angle bisector AD from angle A is \n" ); document.write( "
Algebra.Com's Answer #497346 by tommyt3rd(5050)\"\" \"About 
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cosA=6/10=3/5\r
\n" ); document.write( "\n" ); document.write( "A=arccos(3/5) - about 53.13 deg
\n" ); document.write( "so half is about A2=26.57 deg\r
\n" ); document.write( "\n" ); document.write( "therefore
\n" ); document.write( "cosA2=6/AD
\n" ); document.write( "cos26.57=6/AD
\n" ); document.write( "AD=6/cos26.57=6.71
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