document.write( "Question 348820: Which expression is equivalent to: cos( theta + pi/2)\r
\n" ); document.write( "\n" ); document.write( "a. cos theta
\n" ); document.write( "b. - cos theta
\n" ); document.write( "c. sin theta
\n" ); document.write( "d. - sin theta
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Algebra.Com's Answer #257168 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "Hi,
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\n" ); document.write( "Answer C would be the correct choice
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