document.write( "Question 1160410: if cos theta = -18/17 and theta is in quadrant 3, cos 2theta= ? and tan 2 theta=? \n" ); document.write( "
Algebra.Com's Answer #783681 by Alan3354(69443)\"\" \"About 
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if cos theta = -18/17
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\n" ); document.write( "No real number value for theta.
\n" ); document.write( "|-18/17| > 1
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