document.write( "Question 82019: Hi, this problem is on my homework assignment, and I have no idea how to start this. I'm very confused and I was hoping you guys could help.
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Algebra.Com's Answer #60382 by Nate(3500)\"\" \"About 
You can put this solution on YOUR website!
(1/2)(arcAC - arcAC) = angB\r
\n" ); document.write( "\n" ); document.write( "(1/2)(220 - 140) = angB\r
\n" ); document.write( "\n" ); document.write( "(1/2)(80) = angB\r
\n" ); document.write( "\n" ); document.write( "40 = angB\r
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\n" ); document.write( "\n" ); document.write( "(1/2)(arcDE - arcDF) = angB\r
\n" ); document.write( "\n" ); document.write( "(1/2)(200 - arcDF) = 40\r
\n" ); document.write( "\n" ); document.write( "200 - arcDF = 80\r
\n" ); document.write( "\n" ); document.write( "- arcDF = -120\r
\n" ); document.write( "\n" ); document.write( "arcDF = 120
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