document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=348820>Question 348820</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Which expression is equivalent to: cos( theta + pi/2)\r<BR>\n" );
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document.write( "a. cos theta<BR>\n" );
document.write( "b. - cos theta<BR>\n" );
document.write( "c. sin theta<BR>\n" );
document.write( "d. - sin theta </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #249376 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=249376\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Which expression is equivalent to: cos( theta + pi/2)<BR>\n" );
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document.write( "Thinking about it.<BR>\n" );
document.write( "Let theta = (pi)/6<BR>\n" );
document.write( "Then cos((pi/6)+(pi/2)) = cos(pi/6)cos(pi/2))+sin(pi/6)sin(pi/2) <BR>\n" );
document.write( "= 0+sin(p/6)<BR>\n" );
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document.write( "Ans: sin(theta)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "a. cos theta<BR>\n" );
document.write( "b. - cos theta<BR>\n" );
document.write( "c. sin theta<BR>\n" );
document.write( "d. - sin theta<BR>\n" );
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