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