document.write( "Question 914157: which of the following is co-terminal to 2pi/9\r
\n" ); document.write( "\n" ); document.write( "a) 20pi/9
\n" ); document.write( "b) -15pi/7
\n" ); document.write( "c) -17pi/9
\n" ); document.write( "d) pi/9
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Algebra.Com's Answer #554931 by lwsshak3(11628)\"\" \"About 
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which of the following is co-terminal to 2pi/9
\n" ); document.write( "a) 20pi/9
\n" ); document.write( "b) -15pi/7
\n" ); document.write( "c) -17pi/9
\n" ); document.write( "d) pi/9
\n" ); document.write( "..
\n" ); document.write( "co-terminal angle=-2π+2π/9=(-18/9)π+(2/9)π=-16π/9
\n" ); document.write( "(none of the answers above)
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